B. Develop an aggregate plan for the product line. Production time=1 hr/unit; average labour cost=$10/hr; working time=8-hour per day only during week days; beginning inventory=500 units; Shortage cost=$20/unit/month; carrying cost=$5 per unit per month. Forecast for next year jan feb mar apr may jun Jul aug sep oct nov dec 2500 3000 4000 3500 3500 3000 3000 4000 4000 4000 3000 3000 Management prefers to keep constant workforce and production level (excess or shortage). Demand not met is carried over to next month.