Essentials of Economics 7th Edition by Gregory Mankiw

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This chapter discusses many types of costs: opportunity cost, total cost, fixed cost, variable cost, average total cost, and marginal cost. Fill in the type of cost that best completes each sentence:
a. What you give up for taking some action is called the ________.
b. _________ is falling when marginal cost is below it and rising when marginal cost is above it.
c. A cost that does not depend on the quantity produced is a _________
d. In the ice-cream industry in the short run, ___________ includes the cost of cream and sugar but not the cost of the factory.
e. Profits equal total revenue less ____.
f. The cost of producing an extra unit of output is the ____________