A solution to pricing consumer X out of the market is to instead charge a lump-sum fee equal to area AC, and continue to charge Pc per unit. Profit in this instance equals twice the area AC (two consumers): 2 x AC. As it turns out, since consumer Y's demand is twice consumer X's, ABCD = 2 x AC. The profit is the same and the producer is indifferent to either of these pricing possibilities, although consumer Y is better off this way since she gets consumer surplus BD.