If one ball with a momentum of 50 kg·m/s hits a ball at rest and no other forces are acting on either ball, what's the total momentum of both balls after the collision?

A. 0 kg·m/s

B. 25 kg·m/s

C. 100 kg·m/s

D. 50 kg·m/s

The question needs to provide additional information such as the mass of the two balls involved and what happens after the collision if both balls come to rest then the answer is A, if they both move in the same direction after collision the answer is B.