1. Complete the history portion of the Elm Co. SOP spreadsheet given below. Inven- tory is valued at $700 per unit. The actual inventory at the end of September was 150 units. Future January Elm Co. Sales and Operations Planning Spreadsheet History October November December Sales Plan (in units) 800 850 900 Actual (in units) 826 851 949 Diff. month Diff. cumulative 900 Operations Plan (in units) (in employees) Number working days/mo. Actual (in units) Diff. month Diff. cumulative 800 6 23 798 800 8 19 802 800 8 19 800 19 Inventory Plan (in units) (in 1,000 $) (in units) 122 73 -76 Actual Days of supply