As a basketball player starts to jump for a rebound, he begins to move upward faster and faster until he leaves the floor. During this time that he is in contact with the floor, the force of the floor on his shoes is:

A)bigger than his weight
B) equal in magnitude and opposite in direction to his weight.
C) less than his weight.
D) zero.

The answer is A. I don't really understand because while the player is in contact with the floor, wouldn't the force on his shoes be equal to his weight?