Product C is assembled from components D and E. Item D is made from item F and item G. Item F is made from item J and item K. Item E is made from item H and item I. Item H is made from item J. All parent items require 1 unit of their respective component items. The lead times for each item are listed in table 7.15. a) what is the lead time required to respond to a customer order for product C, assuming that there are no existing inventories or scheduled receipts? b) what is the customer response time if items J and K are in stock? c) if you are allowed to keep either item G or item I in stock (along with items J and K from part b), which one would you choose? Table 7.15 item Lead time (weeks) C 3 D 5 E 6 F 5 G 1 H 1 I 3 J 1 K 3