又遇到一道裸机题，请教NN们！

astronautking

GWD 12-Q22
Denoma, a major consumer-electronics maker, had a sizable decline in sales revenue for its most recent fiscal year.This result appears surprising, because electronics retailers report that although their overall sales were considerably lower than in the previous year, their sales revenue from Denoma models actually grew, largely thanks to some innovative and popular models that Denoma introduced.

Which of the following, if true, does most to explain the apparently surprising result?

A. Because of the need to educate the public about its new models’ capabilities, Denoma’s advertising spending was higher than normal over the period.

B. For the period at issue, Denoma’s major competitors reported declines in revenue that were, in percentage terms, greater than Denoma’s.

C. A significant proportion of Denoma’s revenue comes from making components for other consumer-electronics manufacturers.

D. Unlike some of its major competitors, Denoma has no lines of business outside consumer electronics to provide revenue when retail sales of consumer electronics are weak.

E. During the period, consumer-electronics retailers sold remaining units of Denoma’s superseded models at prices that were deeply discounted from those models’ original price.
没看懂啊！

sdcar2010

The gains made by Denoma in new electronics models were more than offset by loss in other fractions of Denoma's business.  C is the answer.

Allison55

其实思路也比较简单：
D的总收入是下降的，但是他的零售商的销售收入是提高了的，尽管销售量小了
这就说明（1）D的收入来源占比，除了卖给零售商retailer，还有别人，而别人这块的收入是下降的，而且这部分收入所占比重更大。（C选项提供一个“别人”：manufacturers）
（2）为什么会下降：manufacturer和retailer的隐含关系，retailer的销售量小了，进货就少了，供货的manufacturer自然收入就会下降，而D是manufacturer的manufacture，自然也会下降