Two Objects Constitute an Isolated System

Multiple Choice

Two objects constitute an isolated system. In an elastic collision between the two objects, which one of the following statements is a false statement?

A) The total kinetic energy is conserved.
B) The kinetic energy of each object is the same before and after the collision.
C) The total momentum is conserved.
D) The magnitude of the force exerted by each object on the other object is equal.
E) The total kinetic energy before the collision is equal to the total kinetic energy after the collision.