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. Product Structure for Item X

Item X
	Week 1	Week 2	Week 3	Week 4	Week 5	Week 6	Week 7	Week 8
Gross Requirement	0	0	0	0	0	90	125	85
On-hand Inventory
Planned Order Release

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.) What is planned order release for Item H in Week 3? Specify the number of units. What is planned order release for Item H in Week 4? Specify the number of units. What is planned order release for Item H in Week 5? Specify the number of units.