how to use "unlikely", pls,help

[tanviet]

Although the coordination of monetary policy can help facilitate the orderly financing of existing imbalances, it is unlikely that its effect on their size is significant in the absence of an appropriate fiscal adjustment.
(A) it is unlikely that its effect on their size is significant
(B) it is unlikely that the size of their effect would be significant
(C) affecting their sizes are not likely to be significant
(D) the significance of their effect on its size is unlikely
(E) its effect on their size is not likely to be significant

which is correct,

[dongkim2]

[quote="duongthang"]Although the coordination of monetary policy can help facilitate the orderly financing of existing imbalances, it is unlikely that its effect on their size is significant in the absence of an appropriate fiscal adjustment.
(A) it is unlikely that its effect on their size is significant
(B) it is unlikely that the size of their effect would be significant
(C) affecting their sizes are not likely to be significant
(D) the significance of their effect on its size is unlikely
(E) its effect on their size is not likely to be significant

which is correct,[/quote]

I think it is B because the the matter important herein is size, not effect so using the size of their effect would be significant appears more appropriate.

[piyush_nitt]

Although the coordination of monetary policy can help facilitate the orderly financing of existing imbalances, it is unlikely that its effect on their size is significant in the absence of an appropriate fiscal adjustment.
(A) it is unlikely that its effect on their size is significant
(B) it is unlikely that the size of their effect would be significant
(C) affecting their sizes are not likely to be significant
(D) the significance of their effect on its size is unlikely
(E) its effect on their size is not likely to be significant

which is correct,

IMO A

Unlikely preferred over not likely

C and E out.

I think 'its' refer to policy and 'their' refer to Imbalances.

therefore , policy's effect on imbalances size is significant...

B and D changes the meaning of sentence

[tanviet]

A is right?

[gmat_dest]

(E) looks the best and the most concise to me.

[success1111]

Although the coordination of monetary policy can help facilitate the orderly financing of existing imbalances, it is unlikely that its effect on their size is significant in the absence of an appropriate fiscal adjustment.
(A) it is unlikely that its effect on their size is significant
(B) it is unlikely that the size of their effect would be significant
(C) affecting their sizes are not likely to be significant
(D) the significance of their effect on its size is unlikely
(E) its effect on their size is not likely to be significant

which is correct,

E is the best.

When you see CAN in a main clause of a sentence,always read very well to understand the intent of the sentence. "CAN" here indicates future posibility,that is what makes E better than A or B. B indicates "would" the past tence of will.
By the way, E is succinct and laconic.

[tanviet]

A is right because

you can not say that "something is likely/possible". the idiom is that " it is possible/likely that"

[marshmallow]

Although the coordination of monetary policy can help facilitate the orderly financing of existing imbalances, it is unlikely that its effect on their size is significant in the absence of an appropriate fiscal adjustment.
(A) it is unlikely that its effect on their size is significant
(B) it is unlikely that the size of their effect would be significant
(C) affecting their sizes are not likely to be significant
(D) the significance of their effect on its size is unlikely
(E) its effect on their size is not likely to be significant

which is correct,

E is the best.

When you see CAN in a main clause of a sentence,always read very well to understand the intent of the sentence. "CAN" here indicates future posibility,that is what makes E better than A or B. B indicates "would" the past tence of will.
By the way, E is succinct and laconic.

I think E is flawed because the word "its" doesn't refer to any word clearly.
Compared to B, A is more correct because you can say "effect is significant", not "size is significant"