D Question 25 3.94 pts The defining characteristics that separate monopolistic competition from perfect competition in their long run states is that firms in monopolistic competition: O Face a downward sloping demand curve and do not operate at the minimum point of the average total cost curve O Face a horizontal demand curve and do not operate at the minimum point of the average total cost curve O Face a downward sloping demand curve and operate at the minimum point of the average total cost curve Face a downward sloping demand curve and do not operate at the minimum point of the average variable cost curve