Outreach Signals Company maintains and repairs warning lights, such as those found on radio towers and lighthouses. Outreach Signals Company prepared the following end-of-period spreadsheet at December 31, 20Y1, the end of the fiscal year: Outreach Signals Company End-of-Period Spreadsheet For the Year Ended December 31, 20Y1 Unadjusted Trial Balance Adjustments Adjusted Trial Balance Account Title Dr. Cr. Dr. Cr. Dr. Cr. Cash 20,500 20,500