Suppose Barefeet is a monopolist that produces and sells Ooh boots, an amazingly trendy brand with no close substitutes. The following graph shows the market demand and marginal revenue (MR) curves Barefeet faces, as well as its marginal cost (MC), which is constant at $40 per pair of Ooh boots. For simplicity, assume that fixed costs are equal to zero; this, combined with the fact that Barefeet's marginal cost is constant, means that its marginal cost curve is also equal to the average total cost (ATC) curve.First, On the following graph, use the black point (plus symbol) to indicate the profit-maximizing quantity sold and the lowest price at which the firm sells its boots. Next, use the purple points (diamond symbol) to shade the profit, the green points (triangle symbol) to shade the consumer surplus, and the black points (plus symbol) to shade the deadweight loss in this market with perfect price discrimination

100 90 Monopoly Outcome 80 70 60 Profit PRICE (Dollars per pair of Ooh boots) 50 MC = ATC 40 Consumer Surplus 30 20 Deadweight Loss 10 Demand 20 40 60 80 100 120 140 160 180 200 QUANTITY (Pairs of Ooh boots)