求助GMAT,LSAT CR中的TEST 14-5

.       Financial success does not guarantee happiness. This claim is not mere proverbial wisdom but a fact verified by statistics. In a recently concluded survey, only one-third of the respondents who claimed to have achieved financial success reported that they were happy.

Which one of the following, if true, most strongly supports the conclusion drawn from the survey results?

(A) The respondents who reported financial success were, for the most part, financially successful.

(B) Financial success was once thought to be necessary for happiness but is no longer considered a prerequisite for happiness.

(C) Many of the respondents who claimed not to have achieved financial success reported that they were happy five years ago.

(D) Many of the respondents who failed to report financial success were in fact financially successful.（A）

(E) Most of the respondents who reported they were unhappy were in fact happy.

答案给的是A，但是我个人实在是想不清楚为什么给A。