Consider the following Cost Capacity and Demand data Regular time labor cost: $10 per hour Overtime labor cost: $15 per hour Beginning workforce: 15 employees Backorder cost per unit: $20 Beginning inventory: 0 units Inventory holding cost per unit: 510 Labor standard per unit: 0.6 hours Demand data Regular time available/period: 30 Period 1: 793 units hours/employee Period 2: 844 units Overtime available/period: 30 Period 3: 833 units hours/employee Period 4: B20 units If the firm uses a mixed strategy where only backorders are used beside regular labor, the backorder cost for the planning horizon will be O A 51980 B. 53600 C. 5960 D. $5800 E. 50