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相矛盾的现象：制造商Denoma的sales revenue大范围下降。零售商的总销售量下降，但销售D产品的sales revenue却上升。解释这paradox。
C：D的销售收入绝大部分来源于making components for other consumer electronics manufactures，而零售商的overall sales were considerably lower than in the previous year，也就是other consumer electronics manufactures的sales revenue下降，从而D的收入也下降，解释了矛盾。我当时怀疑万一二者抵消怎么办，再看 significant proportion 就明白了

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A：如果增加的广告成本是与销售收入的增多孰大孰小不确定，所以解释不成立

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E选项和题目冲突，题目说largely thanks to some innovative and models that denoma introduced.

而E的意思却是销售收入的增加归功于superseded（作废的，被取代的） models

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ls说得对O(∩_∩)O~谢谢指正~