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The Kebab House is a major producer of kebabs. The following are the estimates of demand, cost, and production data for the next six months. + Cost Data Hiring cost/worker N/A Layoff cost/worker N/A Straight time cost/hour $12 Holding cost/unit/month $4 Backorder cost/unit/month $91 Subcontracting cost/unit $25 Overtime cost/hour $20 8 4. Production Data Working hours/day Labout requirement (hours/unit) Safety stock Beginning inventory (units) Planning horizon (months) 0 300 6 Demand Working Month Forecast Days March 1000 19 April 1300 20 May 800 21 June 600 20 July 800 21 August 1000 19 a. Constant Workforce Plan; Varying Inventory and Stockouts. Use a constant workforce large enough to produce enough units over the six months to meet total forecast demand. All workers must be full-time workers. Assume stockouts result in backorders which must be satisfied from production in following periods. b. Constant Workforce Plan; Overtime. Use a constant workforce of 20 workers and use overtime to meet any additional output requirements