Imani, an accrual basis taxpayer, sold goods in December 2022 for $20,000. The customer was unable to pay cash. So, the customer gave Imani a note for $20,000 that was payable in April 2023. The note bore interest at the Federal rate. The fair market value of the note at the end of 2022 was $18,000. Imani collected $20,500 from the customer in April 2023, $20,000 principal plus $500 interest. Under the accrual method, Imani must recognize gross income of: a. $20,500 in 2023. b. $20,500 in 2022. c. $18,000 in 2022 and $2,500 in 2023. d. $20,000 in 2022 and $500 in 2023