Figure 8-5 -Refer to Figure 8-5.Suppose for the Past 8 Years the 8

Figure 8-5
-Refer to Figure 8-5.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?

A) In the short run,its average cost falls from $47 to $41,and in the long run,average cost falls even further to $37.
B) In the short run,its average cost rises from $47 to $55,and in the long run,average cost falls to $41.
C) In the short run,its average cost falls from $47 to $37,and in the long run,average cost rises to $41.
D) In the short run,its average cost rises from $47 to $55,and in the long run,average cost falls to $37.