prep cr1 87

 87. (31284-!-item-!-188;#058&005747)

Two years ago, the government of Runagia increased by 20 percent the government-provided pensions paid to Runagians over 65.  The aim of the increase was to stimulate the economy in the rural regions of the country, where most pension recipients live.  Statistics, however, show that there has been no increase in economic activity in those regions since then, but that there has been noticeably more spending in the urban areas.
Which of the following, if true, most helps to explain why the increase resulted in the unintended state of affairs described?
A. Until the pensions were increased, many Runagians over 65 in rural regions had been receiving support from their children who live in urban areas.
B. The pensions were increased when the number of people below the poverty level in rural areas of Runagia reached an all-time high.
C. City-dwellers in Runagia rarely travel to rural regions of the country.
D. The Runagian postal system is so inefficient that it can take up to three weeks for pension checks to reach recipients in rural areas.
E. On average, the pensions were higher in rural than in urban areas before the increase.

郁闷了,完全抓不住这题的思路~

请各位高人指点一下~~~

答案是A

提高pension前，老人生活用钱来自子女，由于政府提高了pension，子女给的钱相对要减少。其实老人的生活状态没有变化，只是钱的来源变了，所以其住地经济不会提高。

然而子女因为不用负担老人生活费了，节省的钱自己花了，子女住地经济提高了。