When Bill makes a sandwich, he may choose from among 3 kinds of rolls, 4 varieties of meat, and 2 types of sliced cheese. If he chooses one roll, one meat, and one type of cheese, how many different kinds of sandwiches can he make?
(A) 9
(B) 14
(C) 24
(D) 288
My teacher does not explain how to solve for this, so if I can get an explanation, that would be great!
