Pappy corporation received cash of $36,000 on May 1, 2020 for one year's rent in advance and recorded the transcation with a credit to Unearned rent revenue. The december 31,2020 adjusting entry is

a. debit cash and credit unearned rent revenue, $24,000

b. debit unearned rent rev and credit rent rev, $24,000

c. debit unearned rent rev and credit rent rev, $12,000

d. debit rent rev, and credit unearned rent rev, $24,00

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