When sellers of products have better information about product quality than buyers,a "lemons problem"may arise in which low-quality goods drive out high-quality goods. In (a)the demand curve for high-quality cars is DH.However, as buyers lower their expectations about the average quality of cars on the market,their perceived demand shifts to Dv. When sellers of products have better information about product quality than buyers, a “lemons problem” may arise in which low-quality goods drive out high-quality goods. In (a) the demand curve for high-quality cars is DH. However, as buyers lower their expectations about the average quality of cars on the market, their perceived demand shifts to DM