If not all prices adjust instantly to changing economic circumstances, an unexpected fall in the price level leaves some firms with higher-than-desired prices, and these higher-than-desired prices depress sales and induce firms to ________ the quantity of goods and services they produce.

The income effect indicates that:

A) a rise in money income will cause consumers to buy smaller quantities of normal goods. B) when the price of a product falls, the lower price will induce the consumer to buy more of that product now that it is relatively cheaper. C) consumers should substitute among various products until the marginal utility from the last unit of each product purchased is the same. D) when the price of a product falls, a consumer will be able to buy more of it with a specific money income.

For a monopolistic competitor, marginal revenue at its short-run equilibrium price and quantity equals:

a. price. b. marginal cost. c. average cost. d. average revenue.