rats!

[oopsii]

Laboratory mice and rats live up to 40 % longer than usual when fed a diet of at least 30 % fewer calories than that which they would normally eat, but that otherwise contains all necessary vitamins and nutrients.

A. of at least 30 % fewer calories than that which they would normally eat, but that otherwise
B.with at least 30% fewer calories than what they would normally eat though otherwise it
C.that has at least 30% fewer of the calories that they would normally eat, but otherwise it
D.that has at least 30% fewer calories than they would normally eat but that otherwise
E. that has at least 30% fewer calories than that which they would normally eat,though that otherwise.

please can some1 help me with this question? Source: GMATPrep study pack 1

[bubbliiiiiiii]

Laboratory mice and rats live up to 40 % longer than usual when fed a diet of at least 30 % fewer calories than that which they would normally eat, but that otherwise contains all necessary vitamins and nutrients.

A. of at least 30 % fewer calories than that which they would normally eat, but that otherwise - lacks parallelism
B.with at least 30% fewer calories than what they would normally eat though otherwise it - improper modifier!
C.that has at least 30% fewer of the calories that they would normally eat, but otherwise it - awkward sentence framing
D.that has at least 30% fewer calories than they would normally eat but that otherwise - improper comparison
E. that has at least 30% fewer calories than that which they would normally eat,though that otherwise.

please can some1 help me with this question? Source: GMATPrep study pack 1

IMO E

[killer1387]

Laboratory mice and rats live up to 40 % longer than usual when fed a diet of at least 30 % fewer calories than that which they would normally eat, but that otherwise contains all necessary vitamins and nutrients.

A. of at least 30 % fewer calories than that which they would normally eat, but that otherwise
B.with at least 30% fewer calories than what they would normally eat though otherwise it
C.that has at least 30% fewer of the calories that they would normally eat, but otherwise it
D.that has at least 30% fewer calories than they would normally eat but that otherwise
--> CORRECT

E. that has at least 30% fewer calories than that which they would normally eat,though that otherwise.

i will go with D

OA??

[GmatKiss]

I will go with Killer, IMO: D

OA Please

[jordan23]

I will go with D.
A) of at least 30% calories ... not correct usage
B) ambiguous reference using IT
C) ambiguous reference using IT
D) Correct
E) Incorrect use of Which.


OA Please