Q1. Solve the following MRP problem using this product tree structure and the information below. Level A 0 B C(2) 1 D(2) E(3) D 2 From the Master Production Schedule, the gross requirements for item A are: Period 4 5 1 2 3 6 7 8 Gross Reqt's 15 30 20 15 20 20 30 40 The following table includes the lead times, lot sizes, available balances at the beginning Item Lead Time Lot Size Available Balance Scheduled Receipts A 1 L4L 10 20 in period 1 B 1 10 minimum 20 15 in period 4 1 200 minimum 200 None D 2 100 multiple 200 None E 2 50 multiple 100 None Note: "10 minimum" means you can order 10, 11, 12 but not lower than 10 (e.g. 9); "100 multiple" means you can order 100, 200, 300, etc. Find the planned order releases for all items during the next 8 periods. (assume safety stock requirement is zero) Period 1 1 2 3 4 5 6 7 8 15 30 20 15 20 20 30 40 0 0 0 0 0 0 0 Item A 20 0 15 20 15 20 20 30 40 10 15 0 0 0 0 0 le 0 15 20 15 20 20 30 40 0 2 4 5 6 7 8 Item B 1 2 3 4 5 6 7 8 Item C Part: A SS: 0 LS: L4L LT: Gross Requirements Scheduled Receipts Planned Order Receipts Available Balance Planned Order Releases Part: B SS: 0 LS: LT: Gross Requirements Scheduled Receipts Planned Order Receipts Available Balance Planned Order Releases Part: C SS: 0 LS: LT: Gross Requirements Scheduled Receipts Planned Order Receipts Available Balance Planned Order Releases Part: D SS: 0 LS: LT: Gross Requirements Scheduled Receipts Planned Order Receipts Available Balance Planned Order Releases Part: E SS: 0 LS: LT: Gross Requirements Scheduled Receipts Planned Order Receipts Available Balance Planned Order Releases 2 4 5 6 7 8 Item D 1 2 3 4 5 6 7 8 Item E