Suppose for the past 8 years the firm has been producing Qd units per period using plant size ATC4. Now, following a permanent change in demand, it plans to cut production to Qc units. What will happen to its average cost of production? Part 2 A. In the short run, its average cost rises from $47 to $55, and in the long run, average cost falls to $37. B. In the short run, its average cost falls from $47 to $37, and in the long run, average cost rises to $41. C. In the short run, its average cost rises from $47 to $55, and in the long run, average cost falls to $41. D. In the short run, its average cost falls from $47 to $41, and in the long run, average cost falls even further to $37