A pizza stand at a movie theater has a choice of three toppings, onion (O), mushroom (M), and pepperoni (P). Nina and Russ are sharing a pizza and each of them chooses one topping. Is the sample space for the topping combinations (O, M), (O, P), (M, O), (M, P), (P, O), and (P, M)? Explain. A: No; the outcomes (O, M) and (M, O) are not possible.
B: No; the possible outcomes (O, O), (M, M), and (P, P) are not shown.
C: No; the only possible outcomes are (O, O), (M, M), and (P, P).
D: Yes; all of the possible outcomes are shown.