GMAT Verbal Section | Re: Prescription drugs

SPLIT1) PARALLELISM: "NOT ONLY A BUT ALSO B". A, D AND E ARE NOT CORRECT PARALLEL STRUCTURE

SPLIT2) "EXPLAINED...BECAUSE OF" IS REDUDANT. A AND E ARE OUT.

SPLIT3) EVEN THOUGH C HAS CORRECT PARALLEL STRUCTURE, C IS EXTREMELY WORDY AND WEIRD: "drugs that are becoming and doctors having also written". C IS OUT. WHY B? B CORRECTLY HAS PARALLELISM "NOT ONLY A BUT ALSO B". THE OPTION B IS WORDY TOO, BUT IT IS THE BEST OPTIONS PRESENTED TO US.

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