12.) Suppose there are 3 industries competitive economy (X), (Y) and (Z). You notice that marginal rms in industry (X) and industry (Z) are exiting, and entering industry (Y). Also, assume all the factors of production used in (X), (Y), and (Z) are perfectly specialized economic goods. Which of the following could we infer? A. industry (Y) earns less than the general rate of return on investment B. Industries (X) and (Z) do not earn accounting profits C. The prices for the factors of production in industry (Y) will increase D. The prices for the factors of production in industry (X) and (Z) will increase E. None of the above is correct