2. A salmon fisher faces a price of $5 per kg and produces a weekly output of 4000 kg. The fisher's marginal cost is $4.95 between the possible outputs of 3800 and 4000 kg and $5.05 between the possible outputs of 4000 and 4200 kg. Assume that salmon fishing is a perfectly competitive industry. a. Is the fisher producing at the profit-maximizing point? b. If the average cost at an output of 4000 kg is $5.20, what is the fisher's total profit or loss? c. If the average variable cost at 4000 kg is $4.80, should the fisher stay in business in the short run? d. Draw the marginal revenue and marginal cost curves, a single point from the average cost and average variable costs curves, and the area representing the fisher's total profit or loss on a graph. Plot the endpoints at 0 and 5000 kg to draw the marginal revenue curve, two points for the marginal cost curve, one point for average variable cost, and one point for average cost, for a total of six points. Identify the area of profit or loss. Remember to plot marginal values such as marginal cost halfway between the relevant quantities on the horizontal axis