For a school lunch menu they offer 12 combinations each day. Which of the following could describe the lunch options? Select all that apply.

a. 6 kinds of pizza crust, 6 toppings
b. 1 appetizer, 4 main dishes, 3 side dishes
c. 2 appetizers, 6 main dishes, 1 dessert
d. 7 appetizers, 5 main dishes
e. 1 kind of pizza crust, 12 toppings

Explain your reasoning: