Please help me with this graph

MC Time left 2:23:27 ATC P4 P3 P1 - Demand Q1 Q* Q3 MR The graph above shows the market for a monopolist. The graph suggests that profit-maximizing price and quantity are P* and Q*, respectively. Does it identify profit-maximizing price and quantity correctly? O a. No, the profit-max price is P1, and the quantity is Q1. O b. No, the profit-max price is P3, and the quantity is Q1. O c. Yes, P* and Q* are identified correctly. O d. No, the profit-max price is P4, and the quantity is Q3