(Solved): 30. Refer to the following diagram for a monopolistically competitive firm. Which of the following ...

30. Refer to the following diagram for a monopolistically competitive firm. Which of the following best describes how other firms entering this industry would alter this graph? (A) The ATC curve would shift down. (B) The ATC curve would shift left. (C) The demand and marginal revenue curves would shift to the left.| (D) The MC curve would become downward sloping. (E) The MC curve would shift to a new point along the demand curve.