[求助]GWD1-Q13:关于Florida 失业问题的逻辑题

GWD1-Q13:

In the United States, of the people who moved from one state to another when they retired, the percentage who retired to Florida has decreased by three percentage points over the past ten years.  Since many local businesses in Florida cater to retirees, this decline is likely to have a noticeably negative economic effect on these businesses.

Which of the following, if true, most seriously weakens the argument?

A.    Florida attracts more people who move from one state to another when they retire than does any other state.

B.    The number of people who move out of Florida to accept employment in other states has increased over the past ten years.

C.    There are far more local businesses in Florida that cater to tourists than there are local businesses that cater to retirees.

D.    The total number of people who retired and moved to another state for their retirement has increased significantly over the past ten years.

E.     The number of people who left Florida when they retired to live in another state was greater last year than it was ten years ago.

答案给的是D。在过去十年，退休人数总量剧增和削弱这个题有关系吗？虽然退休人多，但可以不来Florida啊……实在搞不明白这儿是怎么削弱的。麻烦各位大虾帮忙！

请注意 of the people who....,the percentage who retired to Florida...decreased...D选项正是说基数变大了，所以即便占比变小也不一定导致总结果变小。