A is corrent. Marginal cost is the additional cost of producing one more unit. The amount may be obtained by subtracting the total cost of 9 units from the total cost of 8 units. $25.75 = ($33.75 X 9) – ($34.75 X 8).
B is incorrect. Marginal cost is the cost of producing the 9th unit.
B is incorrect. Marginal cost is the cost of producing the 9th unit.
D is incorrect. Marginal cost is the cost of producing the 9th unit.
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