Keith Is a Perfectly Competitive Carnation Grower

Keith is a perfectly competitive carnation grower. The market price is $2 per dozen carnations. Keith's average total cost to grow carnations is $2.50 per dozen. In the long run, Keith will

A) incur an economic loss.
B) raise his price to $2.50 per dozen carnations.
C) continue to make an economic profit.
D) exit the industry if the price and his costs do not change.
E) raise his price to more than $2.50 per dozen carnations.