40 POINTS! Some kids are playing a game of marbles in which a large marble is flicked at smaller marbles to knock them out of a circle. Assuming that the collisions between the marbles are perfectly elastic, which of the following statements is true when a large marble collides with a smaller marble?
A. Both the kinetic energy and the momentum of the system are conserved.
B. Neither the kinetic energy nor the momentum of the system is conserved.
C. The momentum of the system is conserved, while the kinetic energy of the system is not conserved.
D. The kinetic energy of the system is conserved, while momentum is not conserved.