Simons Ltd. has received the following estimates of demand requirements: July Aug. Sept. Oct. Nov. Dec. 1,500 800 1,400 1,800 1,600 1,300 Given details: 1) Inventory carrying cost-5$/unit; 2) regular production cost-4$/unit; 3) hire cost-12$/unit; 4) lay-off cost-14$/unit; 5) Subcontractor cost is $50/unit As operations manager develop below Plans and calculate costs: a) Produce at a steady rateof 1,000 units per month and give left amount to subcontract.Initial stock-500 units. b) Vary the workforce, toproduce monthly demandby receiving and firing employees. Initial stock-0 units. c) Produce at a steady rate of 1,100 units per month and you can fire employees per ending inventory if current months total stock(produced amount + left from initial month) above demand as well as hire them if it isbehind demand on this condition that you can hire new employees for only 300 units. If amount is more than 300 then give left amount to subcontractor. Initial stock-500 units. d) Which is the best method to choose?