Brief Exercise 4-4 The ledger of Rios Company contains the following balances: Retained Earnings $30,000; Dividends $1,000; Service Revenue $50,000; Salaries and Wages Expense $28,000; and Supplies Expense $7,000. Prepare the closing entries at December 31. (Credit account titles are automatically indented when amount is entered. Do not indent manually.) Date Account Titles and Explanation Debit Credit Dec. 31 Service Revenue Income Summary (To close revenue account) Dec. 31 Income Summary Salaries and Wages Expen: Supplies Expensel (To close expense accounts) Dec. 31 (To close net income/ (loss)) Dec. 31 (To close dividends)