A small ball is released from rest from a height above a horizontal floor. The ball falls vertically under gravity, collides with the floor, and bounces vertically upwards. The collision is inelastic, meaning some kinetic energy is lost during the impact and the ball does not return to its original height.
Taking the upward direction as positive, which of the velocity-time graphs shown below correctly represents the motion of the ball from the moment it is released until it reaches its maximum height after the first bounce?

Graph A
Graph B
Graph C
Graph D