The demand for subassembly S is 130 units in weok, 7 . Each unit of S requires 2 units of T and 1 unit of U. Each unit of T requires 2 units of V, 1 unit of W, and 1 unit of X. Finally, each unit of U requires 1 unit of Y and 3 units of Z One firm menufactures 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,2 woeks to make X,2 wooks 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 130 unts of S, there is also a demand for 30 units of U, Which is a component of S. The 30 units of U are needed lor maintenance. purposes. These urits are needed in woek 6 . Modify the gross matesial requirements plan to reflect this change (type 0 if the input bor is not used)