The demand for subassembly S is 150 units in week 7. Each unit of Srequires 1 unit of T and 1 unit of U. Each unit of T requires 1 unit of V, 2 units of W, and 1 unit of . Finally, each unit of U requires 1 unit of Y and 2 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 2 weeks to make T, 2 weeks to make U, 1 week to make V, 2 weeks to make W, 2 weeks to make X, 2 weeks to make Y, and 1 week to make Z. Click the icon to view the product structure and the time-phased product structure. Construct a gross material requirements plan (type 0 if the input box is not used). Week 4 Lead Time (weeks) 1 2 3 5 6 7 Item S 2 T 2 2 U 2 V 1 Gross req Order release Gross reg Order release Gross req Order release Gross req Order release Gross req Order release Gross req Order release Gross req Order release Gross req Order release w 2 N Y N z 1 More info The product structure. The time-phased product structure. Level 0 S w T T 0 T(1) U (1) N