3: A company produces an item at a per-unit cost of $20 and a fixed cost of $1000. The selling price is an exponential function of number of items demanded as follows: p = 60,000e 0.05x, 10 x 100 A. Determine the profit function. B. Plot the profit versus number of units produced. C. Determine the break-even point. D. Determine the demand that maximizes the total profit