graph shown of a monopolistically competitive firm. In the long run: A line graph plots price versus quantity for two curves and two lines.A line graph plots price, cost, revenue which ranges from 0 to 100, with an increment of 10, against dresses per year in thousands, which range from 0 to 21000, with an increment of 7000, for two descending lines, M R and Demand, which intersect with two ascending curves, A T C and M C. There are two intersection points at (90, 7000) and (70, 13000). The values are approximate. Multiple Choice marginal cost will fall for firms that remain as other firms exit the industry. average total cost will rise for firms that remain as other firms enter the industry. demand will fall for firms that remain as other firms enter the industry. demand will rise for firms that remain as other firms exit the industry