Depending on the night, a pizza restaurant offers anywhere from seven to nine different choices of toppings. Sam wants a pizza with three toppings. Which of the following could be the number of different ways that Sam can order his pizza with three different toppings?
I. \(42\)
II. \(56\)
III. \(84\)
A. I only
B. II only
C. III only
D. II and III only
E. I, II and III
OA D