-Refer to the Graph Above to Answer This Question

Multiple Choice

-Refer to the graph above to answer this question.All of the following statements except one are correct.Which is the exception?

A) AC₁,AC₂ and AC₃ are long-run average cost curves.
B) The long-run average cost curve illustrates both increasing and constant returns to scale.
C) Constant returns to scale exist between outputs Q₄ and Q₅.
D) An increase in output from Q₁ to Q₃ could occur in plant 1.
E) Both the short-run and the long run-costs are illustrated in this graph.