请教蓝皮上的一道题：）

若思狗狗

which of the following most logically completes the passage?

concerned about financial well-being of its elderly citizens, the government of Runagiadecided two years ago to increase by 20 percent the government-provided pensionpaid 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-----

我选的是c.They buy goods whose prices tend to rise especially fast in times of inflation

答案是e. In Runagia children typically supplement the income of elderly parents, but only by enough to rpovide them with a comfortable living.

不是很明白~~~希望各位xdjm们赐教~~~~~谢谢啦！！！！！

若思狗狗

谢谢啦：）