14. Product A is made from components B and C. Item B, in turn, is made from D and E. Item C also is an intermediate item, made from F and H. Finally, intermediate item E is made from H and G. Note that item H has two parents. The following are item lead times: Item A B C D E F G H Lead Time (weeks) 1 3 2 3 6 6 4 5 2 a. What lead time in weeks) is needed to respond to a cus- tomer order for product A, assuming no existing invento- ries or scheduled receipts? b. What is the customer response time if all purchased items (i.e., D, F, G, and H) are in inventory? C. If you are allowed to keep just one purchased item in stock, which one would you choose