(8 points total) 3. The table below provides demand data for 6 weeks (weeks 3-8 for the year) for one product. Week Demand Inventory at end of week 50 20 40 40 8 L Suppose inventory is managed with a periodic review system where orders are placed every 4 weeks and R = 300 units. The previous order was at the end of week 1 and the order amount was 100 units. The lead time is a constant 3 weeks. At the beginning of week 3 the inventory level is 160 units. Orders are made at the end of a week. Fill in the empty column in the table above with the inventory level at the end of each week, then answer the following: (2 pts.) a) When is the next order? end of week (4 pts.) b) How large is the next order? (2 pts.) c) When is the next order after the one in parts a and b? end of week