Physics - Mechanics - Momentum - Conservation of momentum - Newton's Cradle Puzzle

Show a Newton's Cradle. Ask: 'If you lift and release ONE ball on the left, what happens on the right?' Options: (A) One ball swings out on the right, (B) All balls swing right, (C) Two balls swing out, (D) Nothing happens. Then: 'What if you release TWO balls?' Options: (A) One ball swings out fast