The Long Pendulum Shown Is Drawn Aside Until the Ball

The long pendulum shown is drawn aside until the ball has risen 0.5 m. It is then given an initial speed of 3.0 m/s.. The speed of the ball at its lowest position is:

A) zero
B) 0.89 m/s
C) 3.1 m/s
D) 3.7 m/s
E) 4.3 m/s