The Velocity at the Midway Point of a Ball Able $\frac{v_{i}}{2}$

Multiple Choice

The velocity at the midway point of a ball able to reach a height y when thrown with velocity vi at the origin is:

A) $\frac{v_{i}}{2}$
B) $\sqrt{v_{i}^{2} 2 g y}$
C) $\sqrt{\frac{v_{i}^{2}}{2}}$
D) $\sqrt{v_{i}^{2}+2 g y}$
E) gy