[求助]新PREP86以前没问过

Which of the following most logically completes the passage?

Concerned about the financial well-being of its elderly citizens, the government of Runagia decided two years ago to increase by 20 percent the government-provided pension paid to all Runagians over 65.  Inflation in the intervening period has been negligible, and the increase has been duly received by all eligible Runagians.  Nevertheless, many of them are no better off financially than they were before the increase, in large part because __________.

A. they rely entirely on the government pension for their income

B. Runagian banks are so inefficient that it can take up to three weeks to cash a pension check

C. they buy goods whose prices tend to rise especially fast in times of inflation

D. the pension was increased when the number of elderly Runagians below the poverty level reached an all-time high

E. in Runagia children typically supplement the income of elderly parents, but only by enough to provide them with a comfortable living

答案E，哪位NN解释一下，我觉得C很对阿，E好像挨不上边

E：在Runagia，子女们会将自己的收入给老父母们，但是只要老父母们的生活可以舒服，子女们就不会多给了。

意思就是说，其实老父母们手中的钱的总量没有变，虽然政府给的多了，但是子女们给的少了。所以并没有更多的better off

C错在与原文不符了，原文说没有inflation.

"Inflation in the intervening period has been negligible"

如果原文没有这句的话C是对的；但原文已经说了，这种inflation是可以被忽略的，那么C就不起作用了