Two Skaters,both of Mass 75

Multiple Choice

Two skaters,both of mass 75.0 kg,are on skates on a frictionless ice pond.One skater throws a 0.40-kg ball at 6.0 m/s to his friend,who catches it and throws it back at 6.0 m/s.When the first skater has caught the returned ball,what is the velocity of each of the two skaters?

A) 0.031 m/s,moving apart
B) 0.063 m/s,moving apart
C) 0.031 m/s,moving towards each other
D) 0.063 m/s,moving towards each other
E) 12 m/s,moving apart