The demand for subassembiy. S is 150 units in week 7 . Each unit of S requites 2 units of T and 2 units of U. Each unit of Trequires 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 coms. It takes 2 woeks to make S, 1 week, to make T, 2 weeks to Click the icon to view the product structure and the time-phased product structure. In addition to 150 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 B. Modity the gross material requirements plan so reflect this change (type 0 if the input box is not used)