Treepop Computer sells 2,500 computers during 2021. Each computer is under 2-year warranty from the date each computer is sold. Treepop estimates, based on past experience with similar computers, that the warranty cost will average $900 per computer. During 2021, the actual warranty cost is incurred $45,000. Treepop uses the accrual basis to record the cost related to the warranty.

The warranty expense presented in Income statement for the year ended 2021 is