When indirect business taxes are subtracted from GDP we get net national product of a nation

One reason that helps to explain the law of supply is the law of

A) diminishing marginal utility. B) diminishing marginal returns. C) decreasing opportunity costs. D) demand.

The higher are a firm's risk-corrected returns

A) the lower are its labor costs. B) the higher are its opportunity costs. C) the more advantage it has in obtaining investor financing. D) the more difficulty it will have financing its expansion plans.