How does the long-run equilibrium for a monopolistically competitive market differ from the long-run equilibrium for a perfectly competitive market? One way in which monopolistically competitive markets and perfectly competitive markets differ is that in long-run equilibrium, monopolistically competitive firms A. charge a price greater than marginal cost . B. do not earn zero economic profits. C. charge a price less than marginal revenue. D. produce at minimum marginal cost. E. produce where marginal revenue is less than marginal cost.