Hayes agreed orally to repair to repair Patterson's rare guitar for $389. Before the work was started, Patterson asked Hayes to perform additional repairs to the instrument and agreed to increase the contract price to $625. After Hayes completed the work, Patterson refused to pay and Hayes sues. Patterson's defense was based on the statute of fraud (the contract was oral). What total amount will Hayes recover? a. $389 b. $625 c. $0 d. $500