A Prankster Drops a Water Balloon from the Top of a Building

A prankster drops a water balloon from the top of a building. If the balloon is traveling at 29.1 m/s when it strikes a window ledge that is 1.5 m above the ground, how tall is the building? Neglect air
Resistance.

A) 46 m
B) 47 m
C) 43 m
D) 45 m