Figure 5 PRICE AND COST (Dollars per month) 100 80 Marginal Cost 60 Average Cost 40 Demand 20 Marging Revenue 20 40 60 80 100 HOUSEHOLDS SERVED If this natural monopolist charged a price that maximized profits, what would that price be? Select one: Oa. $40 Ob. $60 OC $70 Od. $90