Which one of the following statements does hold good when two balls...

Which one of the following statements does hold good when two balls of masses m1 and m2 undergo elastic collision?

A. When m1 < m2 and m2 at rest, there will be maximum transfer of momentum

B. When m1 > m2 and m2 at rest, after collision the ball of mass m2 moves with four times the velocity of m1

C. When m1 = m2 and m2 at rest, there will be maximum transfer of K.E.

D. When collision is oblique and m2 at rest with m1 = m2, after collisions the ball moves in opposite direction