Solve the Problem $h$ Of the Bucket After $t$ Seconds Is Given By

Multiple Choice

Solve the problem.
-A window washer accidentally drops a bucket from the top of a 144 -foot building. The height $h$ of the bucket after $t$ seconds is given by $h = - 16 t ^ { 2 } + 144$ . When will the bucket hit the ground?

A) $3 \mathrm { sec }$
B) $9 \mathrm { sec }$
C) $48 \mathrm { sec }$
D) $- 3 \mathrm { sec }$