Polly Sold Jason a Used Car for $1,000

Polly sold Jason a used car for $1,000.Their contract provided that the engine in the car was in good shape,a true statement as far as Polly knew.Unfortunately,the day after Jason purchased the car,it broke down and was discovered to have significant engine problems.Jason told Polly that he wanted a refund.Polly told him that he was not entitled to a refund because she did not lie and that as far as she knew,there was nothing wrong with the car.Which of the following is true?

A) Jason is entitled to a refund because of a breach of an express warranty.
B) Jason is entitled to a refund because of a breach of the implied warranty of fitness for a particular purpose.
C) Jason is entitled to a refund only if he can obtain evidence that Polly lied.
D) Jason is not entitled to a refund under any circumstances because the vehicle was used.