During an elastic collision between two bodies, which of the following statements are correct? I. The initial kinetic energy is equal to the final kinetic energy of the system. II. The linear momentum is conserved. III. The kinetic energy during $\Delta t$ (the collision time) is not conserved.

• A

  II and III only
• B

  I and III only
• Correct answer
  C

  I, II and III
• D

  I and II only

Hence, the correct answer is option: 'C'.