A monster cookie recipe calls for 2 cups of chocolate chips, 1 cup of nuts and 3 cups of oatmeal. Mary has 9 cups each of oatmeal, chocolate chips, and nuts. If Mary repeats this exact recipe as many times as possible, how many cups of chocolate chips will she use?

A.
2 cups


B.
4 cups


C.
6 cups


D.
8 cups