[求助]不解

Manufacturers of mechanical pencils make most of their profit on pencil leads rather than on the pencils themselves. The Write Company, which cannot sell its leads as cheaply as other manufacturers can, plans to alter the design of its mechanical pencil so that it will accept only a newly designed Write Company lead, which will be sold at the same price as the Write Company’s current lead.

Which of the following, if true, most strongly supports the Write Company’s projection that its plan will lead to an increase in its sales of pencil lead?

(B) Annual sales of mechanical pencils are expected to triple over the next five years.

(E) In extensive test marketing, mechanical-pencil users found the new Write Company pencil markedly superior to other mechanical pencils they had used.

<E> 为正确答案  

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Choice B implies that sales of pencil leads will increase in general, but gives no indication that the Write Company’s sales will increase, and in particular it gives no indication that

the particular plan that the company has adopted will cause its sales to increase.

1. 若  sales of pencil leads will increase in general  成立  为何 B 不能为选项 ?

2. sales of pencil leads will increase in general, but gives no indication that the Write Company’s sales will increase, 为何会有这种因果关系呢?

it's right !!!!

how foolish i am..........

3Q vincent