Questions (6) and (7) multiple choice. Choose the single best answer and explain your choice Question 6 (5 points) According to a Wall Street Journal article, per-capita beef consumption in the United States has fallen close to thirty percent since the mid-1970s. Assume that the beef industry is perfectly com- petitive, that it was in long-run equilibrium in the mid-1970s, and that it is a constant-cost industry. Then, this decrease in demand implies that in the new long-run equilibrium (compared to the original long-run equilibrium): explain why A. Market price, market output, the number of firms, and individual firm output all rise in the long run. B. Market price, market output, the number of firms, and individual firm output all fall in the long run. C. Market price, market output, and the number of firms will decline; individual firm output falls in the short-run and then returns to its original equilibrium level in the long run. D. Market price declines in the short-run, but eventually returns to its original long-run equilib rium level; market output declines in the long run; individual firm output falls in the short run and then returns to its original long-run equilibrium level; there are fewer firms in the long run. E. Market price declines in the short run, but eventually returns to its original long-run equilib rium level; market output declines in the long run; individual firm output declines in the long run: there are fewer firm