The gross requirements for Item X are specified for the beginning of weeks 1 through 8 in the table that follows. The product structure for the item is given in the figure: The lead time of each item is specified within square brackets. For example, the lead time for Item X is 1 week. The number of units required for each lower level part is specified within parentheses. For example, each unit of Item B requires 1 unit of Part C and 2 units of Part D.

There are no units in inventory and no scheduled receipts. Complete the MRP calculations to determine the planned order releases for Item H. (Note that Item H occurs twice on the product structure. Note also that you will need to complete the calculations for other items on the Product Structure.)

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Product Structure for Item X Level 0 X [LT 1] B (1) Z(2) C (4) Level 1 [LT 1] [LT 1] [LT 1] + Level 2 C (1) D (2) H (1) K (1) [LT 1] [LT 2] [LT 1] [LT 3] Level 3 H (1) K (1) [LT 1] M (2) N (1) [LT3] [LT 1] [LT 1] Item X Gross Requirement Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 0 0 0 0 0 80 120 85 On-hand Inventory Planned Order Release Product Structure for Item X Level 0 X [LT 1] B (1) Z(2) C (4) Level 1 [LT 1] [LT 1] [LT 1] + Level 2 C (1) D (2) H (1) K (1) [LT 1] [LT 2] [LT 1] [LT 3] Level 3 H (1) K (1) [LT 1] M (2) N (1) [LT3] [LT 1] [LT 1] Item X Gross Requirement Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 0 0 0 0 0 80 120 85 On-hand Inventory Planned Order Release