Solve the Problem $128 \mathrm { ft } / \mathrm { sec }$

Multiple Choice

Solve the problem.
-A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of $128 \mathrm { ft } / \mathrm { sec }$ , and the gorge is $192 \mathrm { ft }$ deep, during what interval can the flare be seen?
$$\left( h = - 16 t ^ { 2 } + v _ { 0 } t + h _ { 0 } \right)$$

A) $6 < t < 10$
B) $0 < t < 2$
C) $4 < \mathrm { t } < 8$
D) $2 < \mathrm { t } < 6$