If a good or service does not get used up as it is consumed, then it is said to be

A firm experiences ________ when its ________ downward as output increases

A) diseconomies of scale; average total cost curve slopes B) economies of scale; long-run average cost curve slopes C) diminishing marginal returns; long-run average cost curve slopes D) diminishing marginal returns; average total cost curve shifts

What costs associated with the new auto-emission standards arise from decisions made in self-interest and in the social interest?

What will be an ideal response?