Câu 140: GMAT Section 3: Verbal Ability

Unlike the wholesale price of uncut diamonds, the wholesale price of other uncut gemstones has fallen considerably in the last year. Thus, although the retail price of jewelry made with gemstones other than diamonds has not yet fallen, it will inevitably fall. Which of the following, if true, most seriously weakens the argument above?

1. A. The cost of processing uncut gemstones has increased during the last year. — đáp án hiện tại
2. B. The wholesale price of uncut diamonds is typically higher than that of the same volume of other uncut gemstones.
3. C. The operating costs of the average retail jewelry store have remained constant during the last year.
4. D. The cost of mining gemstones other than diamonds has increased in the last year.
5. E. Changes in retail prices always lag behind changes in wholesale prices.