[求助]怀疑答案有误，大家帮忙看看

An object thrown directly upward is at a height of h feet after t seconds, where h=-16(t-3)² +150. At what height, in feet, is the object 2 seconds after it reaches its maximum height?

A) 6  B)86  C)134   D) 150  E)214

Key: D

可是将-2代入，答案应该是C呀。请大家指教。

由2 seconds after it reaches its maximum height得知以t=3+2=5代入原式

h=-16(5-3)^2+150=86   答案B

当t=3的时候， 达到它的最高高度，然后把t=5代入公式得答案是86，怎么和答案不一样呢？