The following information is from the Income Statement of the Vaughn Laundry Service: Revenues Service Revenues $7800 Expenses Salaries and wages expense $ 2940 Advertising expense 600 Rent expense 360 Supplies expense 240 Insurance expense 120 Total expenses 4260 Net income $3540 The entry to close the expense accounts includes a: credit to Income Summary for $4260. debit to Income Summary for $4260. credit to Retained Earnings for $4260. debit to Salaries and Wages Expense for $2940