As the manager of a restaurant, you estimate the total product of labor used to cook meals, as shown in Table 4.6. Use these data to calculate the marginal product of labor.

A. In a diagram, plot the total product and marginal product schedules.

B. What effect does the law of diminishing marginal returns have on these schedules?

C. What underlies the law of diminishing marginal returns? 

Table 4.6 Productivity Data Quantity of Labor 0 1 2 32 4 5 Total Product 0 20 45 65 80 90 Marginal Product