My courses ECN1101-90908202109 Assessments Assignment 6 - Chapter 6 The graph below illustrates the average and marginal product of labour for Get Smart Enterprises. of Average Marginal Product 12 Quantity of labour Refer to the graph above to answer this question. How many units of labour does the firm need to employ to achieve an output that minimizes marginal cost? O a. 6 O b. 12 O c. 1 O d. 3 O e. 9