Graph 17-1 -Refer to Graph 17-1, Panel A.Assume the Market Is Monopolistically

Graph 17-1
-Refer to Graph 17-1, panel A.Assume the market is monopolistically competitive and in long-run equilibrium.If drawn in, the average total cost curve would be:

A) tangent to the demand curve at the market price, P^a
B) tangent to the demand curve where marginal cost intersects demand
C) tangent to the marginal revenue curve at the market price, P^a
D) tangent to the marginal revenue curve at the point where marginal cost intersects marginal revenue