Using the information in Problem construct a net material requirements plan using the following on-hand inventory. Problem The demand for subassembly S is 100 units in week 7. Each unit of S requires 1 unit of T and 2 units of U. Each unit of T requires 1 unit of V, 2 units of W, and 1 unit of X. Finally, each unit of U requires 2 units of Y and 3 units of Z. One firm manufactures all items. It takes 2 weeks to make S. 1 week to make T, 2 weeks to make U, 2 weeks to make V, 3 weeks to make W, 1 week to make X, 2 weeks to make Y, and 1 week to make Z. a) Construct a product structure. Identify all levels, parents, and components. b) Prepare a time-phased product structure. ITEM ON-HAND INVENTORY ITEM ON-HAND INVENTORY 40 Note: Fill out the following table to answer this question: Lead Time (weeks) 1 2 3 4 4 5 5 6 7 8 Item S Gross req On hand Net reg Order receipt Order release Gross req On hand Net reg Order receipt Order release Gross req On hand Net reg Order receipt Order release Item Z has an order release of 60 units in week 3. Item Z has an order release of 320 units in week 1. Item Z has an order release of 320 units in week 3. Item Z has an order release of 300 units in week 2. Item Z has an order release of 320 units in week 2