ｇｗｄ　第１套ｑ１３　题意理解求助

GWD 第1套 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.

这题答案是e。我对颜色标出的部分不太理解，these businesses是指的是local businesses in florida 还是local businesses中cater to retirees的那部分？

如果是前者，我觉得c也可以，ｃ说大部分的ｂｕｓｉｎｅｓｓｅｓ是用于游客的，那也就是说退休来ｆｌｏｒｉｄａ的人数减少不会影响当地的ｂｕｓｉｎｅｓｓ．

请教一下大牛，ｔｈｅｓｅ　ｂｕｓｉｎｅｓｓｅｓ是怎么理解的？

肯定是d阿，你用的是什么答案？Since many local businesses in Florida cater to retirees

已经明确了这些公司是针对退休人员的，应该很好理解了吧