For the items listed below, fill in the appropriate code letter to indicate whether the item is an asset, liability, or stockholders' equity item. Asset Code A Liability L Stockholders' Equity SE E 1. Service Revenue 2. Common Stock 3. Accounts Payable 4. Building 5. Advertising Expense 6. Cash 7. Accounts Receivable 8. Retained Earnings 9. Copyrights 10. Bonds Payable