A Father and His Young Daughter Are on Very Clean

A father and his young daughter are on very clean ice, so there is very little friction (the father has more mass than the daughter) . The father pushes his daughter forward and she slides away at a speed of 3 m/s. The father's velocity is

A) smaller than 3 m/s in the opposite direction as his daughter.
B) zero.
C) smaller than 3 m/s in the same direction as his daughter.
D) 3 m/s in the same direction as his daughter.
E) 3 m/s in the opposite direction as his daughter.