One unit of A is made up of one unit of B and one unit of C. B is made of three units of D and one unit if F. C is composed of three units of B, one unit of D, and four units of E. D is made of one unit of E. Item C had a lead time of one week; Items A,B,E and F have two week lead times; and item D has a lead time of three weeks. Lot-for-lot sizing is used for items C,E,and F. los of size 20,40,and 160 are used for items A,B,and D resepctively. Items A,B,D,andE have on-hand (beginning) inventories of 5,10,100, and 100 respectively; all other items have 0 beginning inventories. We are scheduled to recieve 10 units of A in Week 3, 20 units of B in Week 7, 40 units of F in Week 5, and 60 units of E in week 2; there are no other scheduled receipts. If 20 units of A are required in Week 10, use the low-level coded bill of materials (product structure tree) to find the necessary planned order releases for all components.

1. Gross Requirements
2. Scheduled receipts
3. projected available balance
4. net requirements
5. planned order receipt
6. planned order release