The graph below shows the marginal social cost (MSC), marginal private cost (MPC), marginal social benefit (MSB), demand (D), and marginal revenue (MR) curves for a monopoly. PRICE MSC MPC P D = MSB Q1 22 230 25 26 QUANTITY MR (a) Identify the monopolist's (i) profit-maximizing quantity (ii) profit-maximizing price (b) What information in the graph indicates that there is a negative externality? (c) Identify the socially optimal quantity. (d) In the case in which the government imposes a per-unit tax equal to the marginal external cost, identify each of the following. (i) The dollar value of the tax, using the price labels from the graph (ii) The profit-maximizing quantity associated with the tax (e) Given the monopoly facing the negative externality, would the deadweight loss increase, decrease, or stay the same as a result of imposing the per-unit tax? Explain