Need help ASAP! Cannot move onto the next question without this one completed

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 Hand G. Note that item H has two parents. The following are item lead times: Item Lead Time (weeks) AB 1 2 1 2 D 3 E 4 F 5 G 4 H 6 a. What lead time (in weeks) is needed to respond to a customer order for product A, assuming no existing inventories or scheduled receipts? weeks. (Enter your response as an integer.) b. What is the customer response time if all purchased items (.e., D, F, G, and H) are in inventory? weeks. (Enter your response as an integer.) c. If you are allowed to keep just one purchased item in stock, which one would you choose