Below is a graph that shows the demand and marginal revenue curve of a monopolist with four potential operating points (A, B, C, D) and their corresponding prices (P, Pg, Pc, Pp) and quantities (Qa. Qs. Qc, Qo) MR QQc Q Qo Demand This monopolist may have costs, but those costs are not shown on this graph. Choose the best description of each of the operating points. Note that you will have to use one of the answers twice. Point A : [ Choose | A. A potential profiting-maximizing point if marginal costs are greater than zero B. A point that a monopolist would never choose C. A profiting-maximizing point if marginal costs are equal to zero Point B : [ Choose | A potential profiting-maximizing point if marginal costs are greater than zero B. A point that a monopolist would never choose C. A profiting-maximizing point if marginal costs are equal to zero Point C : [ Choose ] A. Apotential profiting-maximizing point if marginal costs are greater than zero B. A point that a monopolist would never choose C A profiting-maximizing point if marginal costs are equal to zero Point D [ Choose ] A. A potential profiting-maximizing point if marginal costs are greater than zero B. A point that a monopolist would never choose C . Aprofiting-maximizing point if marginal costs are equal to zero