Scalia Systems manufactures rugged handheld tries to maintain inventory at 40% of the following month's expected unit sales. computers for use in adverse working environments. Scalia Scalia began the year with 8,000 units in stock, based the sales manager on the following unit sales projections prepared by SPREADSHEET TOOL: Column/Row headings January February March April 20,000 25,000 18,000 22,000 Prepare a schedule of planned unit production for January through March