A horizontal spring has a mass attached that can move with negligible friction. You stretch the spring and release the mass from rest. For the resulting motion, which of the following statements are true?A) When the spring is (momentarily) fully compressed, K has its largest value. B) When the spring (momentarily) has its relaxed length, U has its largest value. C) When the spring (momentarily) has its relaxed length, K has its smallest value. D) When K is large, U is small, and vice versa. E) When K is large, U is large, and vice versa.