Please answer the question

Osprey Machine Works has the following demand requirements and other data for the upcoming four quarters.

2400 alock out (backcorder) $50 per unit cost 3 2600 Inventory holding cost $10 per unit at end of quarter 4 2100 Hiring workers $4 per unit Laying off workers $8 per unit Unit cost $30 per unit Overtime $10 extra per unit Subcontracting $60 per unitDetermine the cost for the following aggregate planning strategies: a. Plan A - Vary the workforce, adopt a practice of hiring and layoffs. What is the total cost of this strategy? $ [ Select ] b. Plan B - utilize a level strategy @ 2,200 for the planning period, with the option of using overtime and inventory levels if needed. What is the total cost of this plan? $ [ Select ] c. Plan C - utilize a level strategy at the minimum demand level of the planning period, then using subcontracting and inventory levels when needed. What is the total cost of this plan? [ Select ] d. Which plan would you choose? [ Select]Quarter Demand Previous quarter's output 2500 units 1 2300 Beginning inventory 200 units 2 2400 Stockout (backorder) cost $50 per unit 3 2600 Inventory holding cost $10 per unit at end of quarter 4 2100 Hiring workers $4 per unit Laying off workers $8 per unit