PROBLEM 4. (20 pts.) An X product is composed of A, B, C items. The aggregate plan for February and some of the information are provided as follows. Prepare the master production schedule. Aggregate Plan for X (February) Production 3000 Demand (Sales) 2800 Starting Inventory 720 Ending Inventory 600 Weekly Demand for the product Family X (February) 6 8 9 Demand Ratio Starting Inventory 7 Weeks Products B C Production Capacity 600 80 120 400 160 120 0.50 0.30 0.20 200 200 240 360 140 180 150 pes/Day 1 Week 5 workdays 40 280 400