In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer.

(A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve

(B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve

(C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving

(D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve

(E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving

答案是D，解释说E的serving 修饰temperature不对。

我认为serving是修饰整个句子的，而不是修饰temperature，是整个事件"serving" as a thermometer

D中的"it"指代的是什么？

给出的prep的答案肯定是对的么？有没有可能出现问题呢？