A firm is producing 20 units with an average total cost of $25 and marginal cost of $15. If it were to increase production to 21 units, which of the following must occur? ( )
选项:
A:Marginal cost would decrease.
B:Marginal cost would increase.
C:Average total cost would decrease.
D:Average total cost would increase.
发布时间:2024-04-14 22:15:47