An Explosive Hockey Puck of Mass 0

Multiple Choice

An explosive hockey puck of mass 0.127 kg slides along the ice at 32 m/s in the +x direction,and explodes,sending a 0.037-kg chunk moving in the +x direction at 83 m/s.What is the velocity of the other piece of the puck?

A) 32 m/s in the +x direction
B) 11 m/s in the +x direction
C) 7.8 m/s in the +x direction
D) 11 m/s in the -x direction
E) 7.8 m/s in the -x direction