Which expression represents the amount of material y that would be left over if x pieces of wood that are each 6 1/5 inches long are cut from a board that is 64 inches long?
A. y = 64 − 6 1/5x
B. y = 64 x − 6 1/5
C. x = 64 y − 6 1/5
D. x = 64 − 6 1/5y