Nteu Furniture Manafacturers (NFM) has developed a new light fitting, and you need to develop its aggregate schedule. The cost accounting department has supplied you the costs relevant to the aggregate plan, and the marketing department has provided a four-quarter forecast. All are shown as follows: Quarter Forecast 1 140 000 2 120 000 3 150 000 4 130 000 Previous quarter’s output 150 000 units Beginning inventory 0 units Stock out cost for backorders R50 per unit Inventory holding cost R10 per unit for every unit held at the end of the quarter Hiring workers R50 per unit Lay off workers R60 per unit Unit cost R30 per unit Overtime R15 extra per unit Subcontracting Not available Your job is to develop an aggregate plan for the next four quarters. Compile a plan that holds employment steady by using the information given. You need to calculate the "hidden" data (do not submit "hidden" data as no marks are allocated to it and no option exist to provide the actual value) to determine the values for the open space