10. A block on a horizontal frictionless plane is attached to a spring, as shown. The block oscillates along the x-axis with amplitude A. Which of the following statements about energy is correct? (A) The potential energy of the spring is at a minimum at x = 0. (B) The potential energy of the spring is at a minimum at x = A. (C) The kinetic energy of the block is at a minimum at x =0. (D) The kinetic energy of the block is at a maximum at x = A.

10. A block on a horizontal frictionless plane is attached to a spring, as shown. The block oscillates along the x-axis with amplitude A. Which of the following statements about energy is correct? (A) The potential energy of the spring is at a minimum at x = 0. (B) The potential energy of the spring is at a minimum at x = A. (C) The kinetic energy of the block is at a minimum at x =0. (D) The kinetic energy of the block is at a maximum at x = A.