Task 4 In the current situation the COVID19 vaccine supplier is almost in a monopoly position. According to economic theory on monopoly producer, the monopoly producer will restrict the quantity of output to Qopt in order to maximize its profit. Assuming the demand curve D is the marginal social benefit curve, please use the concept of allocati efficient to identify the efficient equilibrium quantity and discuss how, according to your opinion, the efficient equilibrium quantity can be realised. Monopoly MR = MC total profit total cost Cost MC E ATC D Qopt Qe Q MR