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.
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 (i.e., do not need to be ordered)?
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?

Item Lead time (weeks) 6 3