Aletheia is a monopoly supplier of a product in a seaside city. Her marginal cost is $5 per unit and she has no fixed costs. The market demand curve for the product is P = 25-q. What are the profit-maximising price, quantity, profit and DWL if Aletheia charges the same price to all her customers? O P = $5, q = 10 units, n = $75, DWL = $25