If an Object Is Projected Upward with an Initial Velocity $96 \mathrm{ft}$

Multiple Choice

If an object is projected upward with an initial velocity of $96 \mathrm{ft}$ per sec from a height $\mathrm{h}$ of $256 \mathrm{ft}$ , then its height $t$ sec after it is projected is defined by the equation $h=-16 t^{2}+96 t+256$ . How many sec after it is projected will it hit the ground?

A) $10 \mathrm{sec}$
B) $8 \mathrm{sec}$
C) $2 \mathrm{sec}$
D) $9 \mathrm{sec}$