A Profit-Maximizing Firm Will Continue to Expand Output

A profit-maximizing firm will continue to expand output

A) as long as the revenues from the production and sale of an additional unit exceeds the average costs of the unit.
B) until the average cost of producing the good or service is at a minimum.
C) as long as the revenues from the production and sale of an additional unit exceeds the marginal cost of the unit.
D) until the marginal cost of producing a good or service is at a minimum.