This problem relates to the Belgian electricity regulation commission. All monetary amounts are in Belgian francs (BF). Given the huge fixed costs faced by the government-owned Belgian electric power utilities, the commission decided to charge a uniform price of 4.810BF/kWh, far in excess of the marginal cost of l BF/kWh. Then someone suggested that the government could make everyone better off -- small customers, large customers, the government -- by offering consumers a choice of two tariffs. Customers could either choose the above uniform price policy or they could choose a two-part tariff with a 1,173BF subscription fee per year and a unit price of 2.752BF/kWh. Show how this suggestion might achieve what it claims to achieve. What is a necessary condition for the proposal to work?