A monopoly faces the following demand: There are 10 potential buyers, each buyer will buy at most one unit of the good. 2 buyers will buy if the price is not higher than $20, 3 buyers will buy if the price is not higher than $15, and the remaining 5 buyers will buy if the price is not higher than $9. The monopoly has a fixed cost of F = $30, and a constant marginal cost of $5. The monopoly s profit maximizing price is _ _and the deadweight loss is O $9, $0 O $15, $25 O $20, $20 O $15, $20 O Cannot be computed from the data