Re: Having extracted the BRCA1 and BRCA2 genes from human DNA to

For me its A for the following reasons:

B: ..as research subjects.. (Plural), WRONG, later in non-underline part of the sentence, supreme court are contesting it (singular) clearly refers to the reasearch.
C: .. to isolate it.. (singluar), WRONG, Myriad Genetics isolate BRCA1 and BRCA2 (plural).
D: same problem as B
E: same problem as B

Hope it helps!