If the price of output is $16, this firm will produce 5 units of output. (Enter your response as an integer.) Part 4 The total revenue is $ 80. (Enter your response as an integer.) Part 5 The total cost is $ 77. (Enter your response as an integer.) Part 6 The firm will operate in the short run. Part 7 In the long run, the firm should ____________. Part 8 A. neither expand nor shut down, because short-run profits are positive. B. expand, because short-run profits are positive. C. expand, because short-run profits are negative. D. shut down, because short-run profits are negative. E. shut down, because short-run profits are positive