13. Because postage rates are rising, Home Decorator magazine plans to maximize its profits by reducing by one half the number of issues it publishes each year. The quality of articles, the number of articles published per year, and the subscription price will not change. Market research shows that neither subscribers nor advertisers will be lost if the magazine’s plan is instituted.
Which of the following, if true, provides the strongest evidence that the magazine’s profits are likely to decline if the plan is instituted?
(A) With the new postage rates, a typical issue under the proposed plan would cost about one-third more to mail than a typical current issue would.
(B) The majority of the magazine’s subscribers are less concerned about a possible reduction in the quantity of the magazine’s articles than about a possible loss of the current high quality of its articles.
(C) Many of the magazine’s long-time subscribers would continue their subscriptions even if the subscription price were increased.
(D) Most of the advertisers that purchase advertising space in the magazine will continue to spend the same amount on advertising per issue as they have in the past.（D）
(E) Production costs for the magazine are expected to remain stable.
没看明白为什么选D,A哪里错了?谢谢!
Advertising income usually is one main source of revenue for magazine publisher. If D is true, "Most advertisers will continue to spend the same amount on advertising per issue", but the nubmer of issues will be reduced in half, then obviously the advertising revenue will decline, thus the profit will likely decline. So, D is the best answer.
请问A说在新的postage rates下，新的issue会比旧的issue花更多钱，这样不就说明了profit会下降了吗?A错在哪呢?
A我的理解是: 原本的issue所需的邮资反而比proposed (new)issue少，所以if the plan is instituted，proposed issue的profit反而会减少!
不知道我的理解有没有错?请指正
想通D了,可是还是没看出来A 错在哪儿? 请指教
a项加强结论。 比如原来邮资是12块，一年10期，总邮资是120快。现在邮资是15， 一年变成5期，邮资才75快。当然，别的条件不变。
恩，恩。真到考试，谁还有耐心比划这个啊
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