The position x of an object varies with time t. For which of the following equations relating x and t is the motion of the object simple harmonic motion? (There may be more than one correct choice.)A) x = 5 sin23tB) x = 8 cos 3tC) x = 4 tan 2tD) x = 5 sin 3tE) x = 2 cos(3t - 1)