Price discrimination which successfully increases profit does NOT needs the firm to be capable to: (1) separate the market within different groups along with different demand elasticities. (2) maintain entry barriers which defend a firm’s market power in at least the short run. (3) prevent extensive trading (as arbitrage) between customers which pay different prices. (4) exercise several degree of market power. (5) perfectly identify how much each potential customer is willing to pay for each probable quantity of the good.
How can I solve my Economics problem? Please suggest me the correct answer.