The following data show the total output for a firm when different amounts of labour are combined with a fixed amount of capital. Assume that the wage per unit of labour is $10 and the cost of the capital is $50. Labour per period Total output per period 0 0 1 10 2 30 3 90 4 132 5 150 Refer to the above Table, answer the following questions: a. What is the marginal product of the 4th unit of labour hired by the firm? Answer: b. What is the total output per period when this firm is employing labour such that the marginal product of labour is at its maximum? Answer: c. What is the average fixed cost for 150 units of output? Answer d. What is the average variable cost for 132 units of output