(a) and (b) are unidiomatic: (a) is wrong because the sentence doesn't contain "three times as much...", and (b) is wrong because the sentence doesn't contain "more".hksam07 wrote:A new hair-growth drug is being sold for three times the price, per milligram, as the drug's maker charges for another product with the same active ingredient.
A. as
B. than
C. that
D. of what
E. at which
OA: C
(e) is bad diction: "the price at which the manufacturer charges" isn't right. you don't charge at a price; you just charge a price (for something).
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(d), taken literally, has an absurd meaning: it says "the price of what the drug's maker charges".
but you must notice that "what the drug's maker charges" is already the price of the product. therefore, "the price of what the drug's maker charges" would illogically refer to the price of a price.
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that leaves (c), the only answer that's idiomatic and semantically correct. as a bonus, it's concise, too.
