First-degree price discrimination results in maximum profit, but is often not utilized because Select one: O a. a firm would not want to operate in a manner similar to a monopoly. O b. competition from other firms results in demand curves being horizontal and equivalent to ATC curves. O c. since they are used to single prices being charged in most markets, consumers do not differ in their demands. O d. the information and negotiation costs in dealing with each individual customer are very expensive. Clear my choice