Which of the following best describes the relationship between diminishing marginal returns and marginal cost? a. if marginal returns are diminishing while output increases, marginal cost must be increasing. b. if marginal returns are diminishing while output increases, marginal cost must be decreasing. c. if marginal returns are diminishing while output increases, marginal cost can be either increasing or decreasing. d. marginal returns diminish as output decreases, and thus marginal cost must increase. e. marginal returns diminish as output increases, and thus marginal cost must decrease.

Match each definition in column 1 with a vocabulary word from column 2." some of the entries in column 2 do not apply costs which do not change with the level of output costs which change with the level of output the change in total costs resulting from an increase in output by one unit function showing the quantities of a particular good demanded at a range of price when the quantity supplied of a good is greater than the quantity demanded when the quantity demanded for a particular good is greater than the quantity supplied the price and quantity determined in a market when the supply equals the demand when revenue exceeds costs when costs exceeds revenue output where revenue = costs