Hi can you please help me answer:

QUESTION 2 A monopolist sells to identical consumers, using a block pricing approach. That is P1 is charged for the first & units, and P2 for every unit thereafter. Each consumer has demand curve q =20 -2p, and the cost function is c(q) =4q. This monopolist would maximise profits by setting (for a suitable value of q): O P1 = 20 and P2 = 2 O P1 = 10 and P2 = 2 O P1 = 5 and P2 = 4 O P1 = 20 and P2 = 4