the difference between monopolistic competition and perfect competition is that in comparison to perfect competition, monopolistic competition has a. more firms, product differentiation, some price control, and relatively easy but not barrier-free entry. b. fewer firms, product differentiation, some price control, and relatively easy but not barrier-free entry. c. fewer firms, no product differentiation, price control, and relatively easy, barrier-free entry. d. more firms, no product differentiation, some price control, and relatively easy, barrier-free entry.