A bowling ball collides with a stationary pin, causing the pin to move. Which of the following explains why the momentum of the pin increased? A.
The action and reaction forces combined to increase the momentum of the pin and ball.

B.
The reaction force of the pin pushing on the ball caused the pin to move.

C.
The action and reaction forces cancelled each other out, so the pin moved in the direction of the ball.

D.
The action force of the ball on the pin pushed the pin forward.