1000SC Q60

[netigen]

60. After a few weeks’ experience, apprentice jewelers can usually begin to discriminate, though not with absolute certainty, genuine diamonds from imitation diamonds.
(A) genuine diamonds from imitation diamonds
(B) genuine diamonds apart from imitations
(C) between genuine diamonds and imitation diamonds
(D) among genuine diamonds and imitation diamonds
(E) whether diamonds are imitation or genuine

[gauravgoeldelhi]

c should be the answer

[simplyjat]

discriminate between X and Y is the correct idiom

[netigen]

discriminate between X and Y is the correct idiom

OA is C but I found evidence that even A is not wrong since discriminate X from Y is correct english.

See the following sources:

https://www.thefreedictionary.com/discriminate
1. To perceive the distinguishing features of; recognize as distinct: discriminate right from wrong.
2. To make or constitute a distinction in or between: methods that discriminate science from pseudoscience.

https://dictionary.reference.com/browse/discriminate
3. to make or constitute a distinction in or between; differentiate: a mark that discriminates the original from the copy.

[simplyjat]

I think the best explanation is one given by dictionary.com

dis·crim·i·nate
–verb (used without object)
1. to make a distinction in favor of or against a person or thing on the basis of the group, class, or category to which the person or thing belongs rather than according to actual merit; show partiality:
The new law discriminates against foreigners.
He discriminates in favor of his relatives.
2. to note or observe a difference; distinguish accurately:
to discriminate between things.

–verb (used with object)
3. to make or constitute a distinction in or between; differentiate:
a mark that discriminates the original from the copy.
4. to note or distinguish as different:
He can discriminate minute variations in tone.

[netigen]

Comments from an expert will be appreciated.

thanks
AG

[barron]

A and C are coorect
but the meanings are different

A means from a pool of imitation diamonds, it is difficult to determine originals

C means if you compare genuine and imitaion diamonds side by side, it is difficult to find originals

I choose A because the original sentence is correct
distinguish....from
distinguish...and
are correct idioms

if OA is C, then we need some more premise to justify it
can someone contribute more?