8. [20 points] firm makes a product (product A) from five components (intermediate Items B, D, and E, and purchased item C). The bill of materials (BOM) of product A shows the required number of sub- components to make a parent component is given in the parentheses. For example, to make 1 unit of A, 1 unit of B and 2 units of D are required. To make 1 unit of B, 2 units of C are required, and so on. The gross requirement for product A is 200 units in week 8. Inventory on-hand for the items are given in the table below. Calculate the net requirement for the six components. A Item On-Hand Inventory B(1) D(2) A 50 B 60 C 90 C(2) E(1) C(2) F (2) D 70 E 25 F 10