As a firm in a monopolistically competitive market successfully differentiates its products and earns a positive economic profit, it is soon imitated by its rivals and profit of the firm falls to zero. Group of answer choices True FalseIf firms are successful in product differentiation: Group of answer choices their demand will become relatively elastic. they tend to face a horizontal demand curve. they gradually emerge as price takers. consumers will believe that the firms are producing more or less identical goods. they can raise their prices without losing all of their customers to rivals