The demand for subassembly S is 100 units in week 7. Each unit of Srequires 1 unit of T and 2 units of U. Eac unit of T requires 2 units of V, 2 units of W, and 1 unit 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, 1 week to make X, 2 weeks to make Y, and 2 weeks to make Z. a) Choose the correct product structure. A. OB. a Level 0 Level 0 S S V(12) |U12) T() U (2) 1 1 2 TW2) X(1) Y(1) 23) 2 V2) W2) X(1) Y(1) 2(3) LY OC. OD. Level 0 Level 0 S S U12) TI) TU) V2) 1 1 2 V(2) Y(1) 2(3) W2) X(1) 2 Y(1) W2) X(1) U2) Z3) b) Choose the correct time-phased product structure. A. B. O c. > u U w T w W T Y w S X X X x S S S s Y Y Y T w Y U U Z N V Z 1 2 3 4 5 6 7 Time in weeks 1 2 3 4 5 6 7 Time in weeks 1 2 3 4 5 6 7 Time in weeks 1 2 3 4 5 6 7 Time in weeks