Acrobat Bart at the Circus Drops Vertically onto the End

Multiple Choice

Acrobat Bart at the circus drops vertically onto the end of a see-saw, with his partner Art equidistant from the fulcrum at the other end. Art is propelled straight upward a distance twice that of Bart's dropping distance. Neglecting inefficiencies we see

A) the masses of Art and Bart are equal.
B) Art has half the mass of Bart.
C) need more information