An eyeglass manufacturer tried to boost sales for the summer quarter by offering its distributors a special discount if their orders for that quarter exceeded those for last year’s summer quarter by at least 20 percent. Many distributors qualified for this discount. Even with much merchandise discounted, sales increased enough to produce a healthy gain in net profits. The manufacturer plans to repeat this success by offering the same sort of discount for the fall quarter.
Which of the following, if true, most clearly points to a flaw in the manufacturer’s plan to repeat the successful performance of the summer quarter?
(A) In general, a distributor’s orders for the summer quarter are no higher than those for the spring quarter.
(B) Along with offering special discounts to qualifying distributors, the manufacturer increased newspaper and radio advertising in those distributors’ sales areas.
(C) The distributors most likely to qualify for the manufacturer’s special discount are those whose orders were unusually low a year earlier.
(D) The distributors how qualified for the manufacturer’s special discount were free to decide how much of that discount to pass on to their own customers.
(E) The distributors’ ordering more goods in the summer quarter left them overstocked for the fall quarter。 没有人对B疑惑阿？讨论里没有关于B的讨论，大家来帮我解答吧！ B说，生产商除了给分销商折扣外，还在分销商的区域里增强了报纸和广播等广告措施。那不就是可以说明不是给分销商的折扣导致了销售的增长，而是这些广告措施增加了销售。FALL里，生产商只是要计划又通过给分销商折扣来刺激销售，那销售就不一定上涨阿，因为没说也会跟着做广告阿！ 帮忙回答一下吧！ 不能说明不是折扣导致增长，只能说明可能不是折扣导致增长。 | 
