21. LO.2 Bigham Corporation, an accrual basis calendar year taxpayer, sells its ser vices under 12- and 24-month contracts. The corporation provides services to each customer every month. On July 1, 2020, Bigham sold the following customer ss Income contracts: Length of Contract Total Proceeds $14,000 $ 24,000 12 months 24 months Determine the income to be recognized in taxable income in 2020 and 2021. 2021 Income 2020 Income Length of Contract 12 months 24 months a. C. d. b