Consider the following function definition: def my_min(a, b): if a <= b: return a else: return b Which of the following is an incorrect way of using the function my_min? a. my_min(-5, 6, 7) b. x = (3, 9, 12, 15, 18] my_min(my_min(-3, X(-1]), x[0]) my_min(my_min(-10, 4), my_min(22, 14)) d. z = 0 t = 15 my_min(t, z)