Assume that labor?the only variable input of a firm?has the average and marginal product curves shown in the following graph. Labor?s wage is $60 per unit.a. When the firm attains minimum average variable cost, how many units of labor is it using?b. What level of output is associated with minimum average variable cost?c. What is the average variable cost of producing this output?d. Suppose the firm is using 100 units of labor. What is output? What is marginal cost? What is average variable cost?

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350 250 АР 150 50 20 40 60 80 100 120 MP Labor Average and marginal products