The demand for subassembly S is 100 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 1 unit of X. Finally, each unit of U requires 2 units of Y and 3 units of Z. One firm manufactures 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, 1 week to make X, 2 weeks to make Y, and 1 week to make Z. Week 4 Lead Time (weeks) Item 1 2 3 5 6 7 S Gross reg On hand Net req N Order receipt Order release Level V 0 S w T X X TU) V (2) 1 s Y U U Z N 2 V1) W(2) X(1) Y(2) Z(3) + 1 02- 6 7 2 3 4 5 Time in weeks CD- Item S T U On-Hand Inventory 20 20 40 30 On-Hand Inventory 30 25 240 40 Item w Y Z ED>