Suppose That, When a Stone Is Thrown Upwards with a Speed

Multiple Choice

Suppose that, when a stone is thrown upwards with a speed of 120 ft/sec, its height, h feet, after t seconds, is given by $h ( t ) = 120 t - 16 t ^ { 2 }$ The maximum height of the stone is

A) 200 ft
B) 225 ft
C) 240 ft
D) 250 ft
E) 280 ft