Two ice skaters with masses of 40 kg and 60 kg stand together on frictionless ice. The first skater pushes against the second.

Two ice skaters with masses of 40 kg and 60 kg stand together on frictionless ice. The first skater pushes against the second. When the first skater has moved a distance of 12 m, how far has the second skater moved?   

A12 m

B 10 m

C 8 m

D Cannot determine without knowing the force of the push.  

E 0 m