According to the Impulse-Momentum Equation Ft = Change in (Mv),a

According to the impulse-momentum equation Ft = change in (mv) ,a person will suffer less injury falling on a wooden floor which "gives" than on a more rigid cement floor.The "F" in the above equation stands for the force exerted on the

A) only the person.
B) only the floor.
C) either the force on the person or the force on the floor
D) the sum of the force on the person and the force on the floor