Suppose Clomper's is a monopolist that manufactures and sells Stompers, an extremely trendy shoe brand with no close substitutes. The following graph shows the market demand and marginal revenue (MR) curves Clomper's faces, as well as its marginal cost (MC), which is constant at $50 per pair of Stompers. For simplicity, assume that fixed costs are equal to zero; this, combined with the fact that Clomper's marginal cost is constant, means that its marginal cost curve is also equal to the average total cost (ATC) curve