3071EconomicsMedium
in long-run equilibrium in a competitive market, firms are operating at?
Aintersection of marginal cost and marginal revenue
Bzero economic profit
Ctheir efficient scale
Dall of these answers are correct
Ethe minimum of their average-total-cost curves
Correct answer
D. all of these answers are correct
Explanation
The correct answer is all of these answers are correct.