OG12-87,

87。in the United States, of the people who moved from one state to another when they retired, the percentage who retired to Florida has decrease by three percentage points over the past ten years. Since many local businesses in Florida cater to retirees, these declines are likely to have a noticeable negative economic effect on these businesses and therefore on the economy of Florida.
which of the following, if true, most seriously weaken the argument above?
A. People who moved from one state to another when they retired moved a greater distance, on average, last year than such people did ten years ago
B.People were more likely to retire to North Carolina from another state last year than people were ten years ago
C.The numbers of people who moved from one state to another when they retired has increased significantly over the past ten years
D.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.
E.Florida attracts more people who move from one state to another when they retire than does any other state.
答案选C。
这题是不是说退休以后搬去佛罗里达州的人变少，对其经济造成不好的影响。还是说在佛罗里达州退休的人少啊？