If a Projectile Is Launched Upward from a Height of 96

Multiple Choice

If a projectile is launched upward from a height of 96 feet at an initial velocity of 80 feet per second, then its height $h$ after $t$ seconds is given by the function $h(t) =-16 t^{2}+80 t+96$ . After how many seconds does the projectile land on the ground?

A) 6 seconds
B) 11 seconds
C) 3.0 seconds
D) 5.0 seoonds