题目是考察关于income yield变化的，想问下statement 3应该怎么去理解？
"but it would be reduced by greater amounts the longer she waits to purchase the annuity"?
statement 2的时候老师讲解，等的越久再买年金，N会下降，所以income yield会上升；那statement3的这句话的意思不是也一样么？如果她等得越久，N也会下降，按理说amount应该是会上升而不是reduced more啊？
