In Long- Run Equilibrium, a Monopolistically Competitive Industry Is Characterized

In long- run equilibrium, a monopolistically competitive industry is characterized by

A) zero profits for all firms in the industry.
B) all firms operating at the minimum point of their long- run average cost curves.
C) positive profits for all firms in the industry.
D) positive profits as a result of barriers to entry.
E) a perfectly elastic demand curve facing each firm in the industry.