Product Structure Tree Problem The following table lists the components needed to assemble an end item, A, the amount on hand, and the direct components of each item and, in brackets, the number of each component for each parent. AMOUNT ON HAND ITEM A (END ITEM) B 5 10 20 DIRECT COMPONENTS B(2), C(1), D(3) E(1), F(2), G(1) F(2), H(2) K(2), L(1) C D 15 37 - IO. Tm 10 20 5 5 (2) J L M 30 10 F(2), M(3) 5 a) Draw the product structure tree for the End Item, A. b) If 60 units of the End Item, A, are to be assembled, how many additional units of Fare needed