Fredrick threw a ball from the top of a building. The height of the ball, in feet, after it is thrown is modeled by the function h(t) = -16t^2 +64t + 100, where represents time, in seconds. Approximately how long did it take the ball to reach the ground (h = 0)?
A. 1.2 seconds
B. 3.5 seconds
C. 4.0 seconds
D. 4.5 seconds
E. 5.2 seconds