4. Product structure for A A B(3) C (1) D(1) E(x) E(2) D(1) F(3) F(3) 4. How many purchased items and subassembled items are here in this product structure? (watch out, same item is one component! End item is not subassembly) How many units of E (denoted x ) must go into B (only the left side as the right side goes inot C ) t produce 5 units of end item A, if total units of item F requirement is 120 ? \begin{tabular}{|l|l|l|l|} \hline Answers: & Purchased item & 1% \\ & Subassembly & & \\ & X & & \\ & & 2% & Same unit is one item. For example, H is on left and right, it is just one item \\ \cline { 5 - 5 } & & & \end{tabular}