Cullumber Consulting uses the cash basis of accounting and a fiscal year ending December 31. Beginning on September 1, 2021, Cullumber performs services for Renfro International at a rate of $4300 per month. On February 12, 2022, Renfro pays Cullumber $25400 in full for all services rendered from September 1, 2021 to January 31, 2022. Cullumber understated accrual basis revenues by. on its year-end 2021 financial statement. $20320 $16020 $25400 $4300