Below are the account balances for Cowboy Law Firm at the end of December Accounts Cash Salaries expense Accounts payable Retained earnings Utilities expense Supplies Service revenue Common stock Balances $ 4,900 1,950 2,900 3,950 1,000 13,300 8,800 5,500 Required: Use only the appropriate accounts to prepare an income statement. COWBOY LAW FIRM Income Statement For the Period Ended December 31 Expenses: Total expenses