Two Ice Skaters, One with a Mass of 45 Kg

Multiple Choice

Two ice skaters, one with a mass of 45 kg and the other with a mass of 60 kg, push off against one another starting from a stationary position. After they have pushed off, the relative speed at which they separate is 0.600 m/s. What is the speed of the 60-kg skater?

A) 0.343 m/s
B) 0.257 m/s
C) 0.375 m/s
D) 0.750 m/s
E) 0.225 m/s