og12 34 dietz food 请牛牛赐教

34. A year ago, Dietz Foods launched a yearlong
advertising campaign for its canned tuna. Last year
Dietz sold 12 million cans of tuna compared to the 10
million sold during the previous year, an increase
directly attributable to new customers brought in by
the campaign. Profits from the additional sales,
however, were substantially less than the cost of the
advertising campaign. Clearly, therefore, the campaign
did nothing to further Dietz’s economic interests.
Which of the following, if true, most seriously weakens
the argument?
(A) Sales of canned tuna account for a relatively
small percentage of Dietz Foods’ profits.
(B) Most of the people who bought Dietz’s canned
tuna for the first time as a result of the
campaign were already loyal customers of other
Dietz products.
(C) A less expensive advertising campaign would
have brought in significantly fewer new
customers for Dietz’s canned tuna than did the
campaign Dietz Foods launched last year.
(D) Dietz made money on sales of canned tuna last
year.
(E) In each of the past five years, there was a steep,
industry-wide decline in sales of canned tuna.

我认为选B，答案选E，我左看右看看不出E跟题目的关系，请牛牛赐教

D开展了为期一年长的为canned tuna的广告宣传活动，但是D的tuna销量仅从10增长到了12，因此广告宣传活动没有提高D的经济利益。

以下哪个选项削弱了该论断？

B很多第一次买tuna的客户就变成了D的忠实客户，但是如果其他的公司销量大涨还是不能说明该活动有效。

E在过去五年的每一年里，行业的tuna销售都在减少。这证明了广告宣传对D的tuna销售起了很大作用，否则应该和行业其他公司一样减少