求助新prep-99

99.
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E. During the period, consumer-electronics retailers sold remaining units of Denoma’s superseded models at prices that were deeply discounted from those models’ original prices.

答案c
不明白为什么选这个
题目中说surprising 指的是什么东西surpring?是指Denoma models 的收入增加令人惊奇吗？还是指虽然Denoma models 的收入增加了，但是总的收入减少了令人惊奇？A为什么不对呢？

期待大家帮我解答呀呀呀~~~