The demand for subassembly S is 130 units in week 7. Each unit of Srequires 2 units of T and 1 unit of U. Each unit of T requires 2 units of V, 1 unit of W. and 2 units of X. Finally, each unit of U requires 1 unit of Y and 3 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. 1 week 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 O if the input box is not used). Week 4 Item Lead Time (weeks) 1 2 3 5 6 7 S JO 2. T N U L 2 V 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 Gross req Order release w JL 2 1 Y N Z 1 The product structure. The time-phased product structure. Level a 0 S V w T o 0 T(2) U (1) S Y C N 2 V(2) W(1) X(2) Y(1) Z(3) 6 -N 2 3 5 Time in weeks