Sentence Correction (SC) | Re: QOTD: A new test for AIDS has proved

A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

(A) in eliminating blood, contaminated with the virus, from the nation's blood supply
virus is not from nation's blood supply : Incorrect

(B) in eliminating blood from the nation's blood supply that is contaminated with the virus
blood supply is not contaminated : Incorrect

(C) in eliminating from the nation's blood supply blood that is contaminated with the virus
correct
(D)
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