Which answer best describes how to solve this story problem? Mark bought 5 bags of red apples with 6 apples in each bag. He bought 4 bags of green apples with 5 apples in each bag. How many more red apples than green apples did Mark buy?  A.Multiply 5 by 6. Multiply 4 by 5. Subtract the two products.  B.Multiply 5 by 6. Multiply 4 by 5. Add the two products.  C.Add 6 and 5. Add 5 and 4. Subtract the two sums.