When there are economies of scale, (1pts) Question 12 - When there are economies of scale, Select d) output does not affect per-unit costs as your answer d) output does not affect per-unit costs Select a) per-unit costs increase as output increases as your answer a) per-unit costs increase as output increases Select b) per-unit costs decrease as output increases as your answer b) per-unit costs decrease as output increases Select c) per-unit costs are constant as output increases as your answer c) per-unit costs are constant as output increases