The demand for subassembly S is 90 units in week 7. Each unit of Srequires 1 unit of T and 2 units of U. Each unit of T requires 1 unit of V. 2 units 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. 2 weeks to make X. 2 weeks to make Y, and 2 weeks to make Z. Click the icon to view the product structure and the time-phased product structure. More info The product structure. The time-phased product structure. a Level V 0 S & w T x TO) U (2) S S 1 L Y 2 U Z 2 V1) W(2) X(2) Y(1) Z(3) - 6 2 3 4 5 Time in weeks In addition to 90 units of S, there is also a demand for 20 units of U, which is a component of S. The 20 units of U are needed for maintenance purposes. These units are needed in week 6. Modify the gross material requirements plan to reflect this change (type of the input box is not used) Week Lead Time (weeks) 1 2 3 4 5 6 7 Item S JU 2 T 2 Gross reg Order release Gross reg Order release Grossreg Order release Gross reg Order release U 2 V 1 w 2 2 Grosso Order release Grossro Order release Gross reg Order release Grossr Order release Y 2 LLL z 2 2