same question on excelsior clay works please explain the answer , do not copy paste previously answered versions of the question. and please answer all 3 parts a, b, c

16. Excelsior Clay Works, a fictional manufacturer of a variety of high-quality glazed clay roof tiles in Kerala, India, has the following composite demand forecasts (in hundreds of units): 17.10 Ethical issues Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Work days 22 20 23 22 24 22 23 17 21 22 20 20 Forecast 200 300 350 600 450 150 190 260 360 490 340 160 Additional Planning Data Hiring cost: $400 per worker hired Firing cost: $200 per worker fired Regular time cost: $100 per worker per day Overtime cost: $150 per worker per day Idle time cost: $60 per worker per day Inventory carrying cost: $10 per hundred units per month Backorder cost: $20 per hundred units (based on shortages at the end of the month) Productivity rate: 100 units per worker per day Workforce size at the beginning of January: 20 workers Beginning inventory at the beginning of January: 0 units Develop a sales and operations plan using the following three strategies and find the total cost of each of the strategies: a. A level strategy of constant workforce with inventories and backorders to meet demand variations. b. A chase strategy with the options of hiring and firing workers. Develop a sales and operations plan using the following three strategies and find the total cost of each of the strategies: a. A level strategy of constant workforce with inventories and backorders to meet demand variations. b. A chase strategy with the options of hiring and firing workers. C. A mixed strategy keeping the workforce size constant at 20 and by using overtime and idle time to absorb changes in demand