"The buyer of an apartment complex is told that the refrigerator in one of the apartments goes with the sale. After taking title, he discovered that the refrigerator belonged to the tenant. Which is true about this situation?

When used-car dealers signal the quality of a used car with a warranty, a. buyers believe the signal because the cost of a false signal is high b. it is not rational to believe the signal because some used-car dealers are crooked c. the demand for lemons is eliminated d. the price of a lemon rises above the price of a good used car because warranty costs on lemons are greater than warranty costs on good used cars