Question 9 This Quiz: 100 pts possible The graph shows the marginal cost of producing plates and the marginal benefit from plates in Oakdale Mugs per plate Oakdale achieves allocation efficiency if MC 18 O A. 6 plates an hour are produced 15- O B. the largest quantity of plates possible is produced 12- O C. people's marginal benefit from a plate exceeds the marginal cost of producing it O D. 15 plates per hour an produced 9 6- 3- MB 6 12 15 Plates per hour