Please help im really confused!!

Marcy has 2 1/4
cups of flour. Her cookie recipe calls for 2/3
cups of flour. After she makes her cookies, how much flour will she have left?

A.) 1 3/7 cups
B.) 1 7/12 cups
C.) 2 3/7 cups
D. 2 11/12 cups

Please help im really confused Marcy has 2 14 cups of flour Her cookie recipe calls for 23 cups of flour After she makes her cookies how much flour will she hav class=