If a Ball Is Thrown Upward at 19 $S = 70 + 19.6 t - 4.9 t ^ { 2 }$

Multiple Choice

If a ball is thrown upward at 19.6 meters per second from the top of a building that is 70 meters high, the height of the ball can be modeled by $S = 70 + 19.6 t - 4.9 t ^ { 2 }$ meters, where t is the number of seconds after the ball is
Thrown. What is the ball's maximum height?

A) 70 m
B) 128.8 m
C) 84.7 m
D) 89.6 m