GWD一道逻辑题，没想明白

Capuchin monkeys often rub their bodies with a certain type of millipede.  Laboratory tests show that secretions from the bodies of these millipedes are rich in two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate capuchins.  Some scientists hypothesize that the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes.

 Which of the following, if true, provides the most support for the scientists’ hypothesis?

A.      A single millipede often gets passed around among several capuchins, all of whom rub their bodies with it.

B.       The two chemicals that repel mosquitoes also repel several other varieties of insects.

C.       The capuchins rarely rub their bodies with the millipedes except during the rainy season, when mosquito populations are at their peak.

D.      Although the capuchins eat several species of insects, they do not eat the type of millipede they use to rub their bodies.

E.       The two insect-repelling chemicals in the secretions of the millipedes are carcinogenic for humans but do not appear to be carcinogenic for capuchins.

这道题没找到答案，大家觉得选什么呢？我刚开始选Ｃ　后来觉得A也靠普   

我觉得是C

A需要二步推导，不如C来得直接

换句话说，就是A没有直接提到Mosquito，所以没有直接相关Scientists' hypothesis.

个人感觉c比a好

因为原文的结论是说 c猴子用m 来驱赶蚊子

a强调了 c猴子都会用m来抓身体

c强调了 在蚊子盛行的时候,c猴子才会用m来抓身体; 所以c好