Appendix: Completing an End-of-Period Spreadsheet Alert Security Services Co. offers security services to business clients. Complete the following end-of-period spreadsheet for Alert Security Services Co.: If an amount box does not require an entry, leave it blank. Alert Security Services Co. End-of-Period Spreadsheet (Work Sheet) For the Year Ended October 31, 2017 Adjusted Trial Balance Income Statement Balance Sheet Account Title Dr. Cr. Dr. Cr. Dr. Cr. Cash 366 Accounts Receivable 2,684 Supplies 122 Prepaid Insurance 92 Land 3,050 Equipment 1,220 Accumulated Depreciation 244 Accounts Payable 1,098 Wages Payable 122