GWD 1 一道逻辑题。选项ＢＣ模糊，请赐教

Q3:

A product that represents a clear technological advance over
competing products can generally command a high price.  Because technological
advances tend to be quickly surpassed and companies want to make large
profits while they still can, many companies charge the greatest price the
market will bear when they have such a product. 
But large profits on the mew
product will give competitors a strong incentive to quickly match the mew
product’s capabilities. 
Consequently, the strategy to maximize overall profit from a new product
is to charge less than the greatest possible price.

In the argument above, the two portions in boldface play which of the following
roles?

1. The
        first is an assumption that forms the basis for a course of action that
        the argument criticizes; the second presents the course of action endorsed
        by the argument.
2. The
        first is a consideration raised to explain the appeal of a certain
        strategy; the second is a consideration raised to call into question the wisdom
        of adopting that strategy.
3. The
        first is an assumption that has been used to justify a certain strategy;
        the second is a consideration that is used to cast doubt on that
        assumption.
4. The
        first is a consideration raised in support of a strategy the argument
        endorses; the second presents grounds in support of that consideration.
5. The
        first is a consideration raised to show that adopting a certain strategy
        is unlikely to achieve the intended effect; the second is presented to
        explain the appeal of that strategy.

选B，第一个boldface是用于解释many company charge the greatest price...的原因，在这里看作consideration更妥当，而C的后一句明显错了，第二个boldface明显是针对company charge the greatest price...这一策略的可行性的，而不是针对technology advances这个原因的，所以C选项不对。