问一道prep黑脸题，请问是不是答案错了。。。

这是prep12  CR的第66题

A productthat represents a clear technological advance over competingproducts can generally command a high  price. Surprisingly, perhaps, thestrategy to maximizeoverall profit from a new productis to charge than the greatestprice the market will bear. Many companies charge the maximumpossible price for such a product,because they want to make as much profit as they can andtechnological advances tend to be quickly surpassed. The drawbackis that large profits on the new productgive competitors a strong incentiveto quickly match  the new product'scapabilities.

In the argument above, the two portions inboldface play which of the followingroles?

A.       The first is the position the argument advocates; the secondpresents grounds for rejecting an alternative position.

B.       The first is the position the argument advocates; the secondis an alternative position that the argument rejects.

C.       The first presentsa strategy for achievinga certain goal; the second presentsa drawback to that strategy.

D.       The first presentsa strategy for achievinga certain goal; the second presents grounds for preferring a different

答案说是A.   Correct. The argument advocatesthe strategy recommended in the first boldfacedportion; the second boldfaced portion states a drawback of an alternative strategyandthus presentsgrounds for rejectingthe positionthatthe alternative strategy iseffective.