Journalize the adjusting entry needed on December 31 for each situation. Use the letters to label the journal entries. (Record debits first, then credits. Select the explanation on the last line of the journal entry table.) a. On October 1, a business collected $3.000 rent in advance, debiting Cash and crediting Uneamed Revenue. The tenant was paying one year's rent in advance. At December 31.jhe business must account for the amount of rent it has eamed. Date (a) Dec. 31 Accounts and Explanation Debit Credit b. Salaries expense is $1,800 per day-Monday through Friday-and the business pays employees each Friday. This year December 31 falls on a Thursday. Date (b) Dec. 31 Accounts and Explanation Debit Credit