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    Principles of Economics Study Set 12
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    Exam 8: Costs and the Changes at Firms Over Time
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    Marginal Cost
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Marginal Cost

Question 38

Question 38

Multiple Choice

Marginal cost


A) is usually zero in the short run.
B) equals total costs plus total fixed costs.
C) will fall with output until the onset of diminishing marginal returns.
D) does not vary with the quantity of output that a firm produces.
E) is usually zero in the long run.

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