The diagram shows a horizontal spring attached to a block. The block's equilibrium position is at C, and the block oscillates between points A and E with no friction. As the block moves from E to C, which of the following statements is true? Select all apply. mass spring system the block's kinetic energy increases the spring potential energy decreases the block's kinetic energy stays the same the spring potential energy stays the same the spring potential energy increases the block's kinetic energy decreases