GMAT Practice Question Set #11 (Question 31-33)

Critical Reasoning Question #33: Polyester and Nylon Prices  
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Unlike the wholesale price of raw polyester, the wholesale price of raw nylon has fallen considerably in the last year. Thus, although the retail price of nylon clothing at retail clothing stores has not yet fallen, it will inevitably fall.

Which of the following, if true, most seriously weakens the argument above?

(A)

The cost of processing raw nylon for cloth has increased during the last year.

(B)

The wholesale price of raw polyester is typically higher than that of the same volume of raw nylon.

(C)

The operating costs of the average retail clothing store have remained constant during the last year.

(D)

Changes in retail prices always lag behind changes in wholesale prices.

(E)

The cost of harvesting raw nylon has increased in the last year.

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