Consider a four-month sales and operations planning problem with the monthly demand data shown in the table below. Every plan should start and end with 10 employees and should start (at the beginning of January) and end (at the end of April) with 40 units of inventory. Each employee makes 10 units per month and each hire costs $800 and each layoff (firing) costs $600. Month Demand (units) Product Inventory ion a) How many employees would there be in March for Level plan? Number of Employees in March for Level plan = January 200 200 40 b) What would be the cost for hiring and firing for a Level plan? Cost for hiring and firing = 160 200 80 Februar y c) What would be the total inventory (summed over the 4 months) for a Level plan? Total inventory (over the 4 months) = March 220 200 60 April 220 200 40 d) How many employees would there be in March for Chase plan? Number of Employees in March for Chase plan =