The demand for subassembly S is 120 units in week 7 . Each unit of S requires 2 units of T and 2 units of U. Each unit of T requires 2 units of V, 2 units of W, and 2 units of X. Finally, each unit of U requires 2 units of Y and 3 units of Z. One firm manufactures all tems. It takes 2 weoks to make 3,2 weeks to make T,2 weeks to make U,1 week to make V,2 weoks to make W,2 weeks to make X,2 weoks to make Y, and 2 weeks to make Z Click the icon to view the product structure and the time-phased product structure. In addition to 120 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 neodod for maintenance purposes. These units are needed in week 6 . Modify the gross material requirements plan to reflect this change (Ppe 0 if the input box is not used)