a) You make widgets. Widgets are made up of 10 parts: 2 of Part A, 5 of Part B, and 3 of Part C. The leadtime for combining all the parts to produce a widget is 3 weeks. The leadtime to order Part A from an outside supplier is 2 weeks. The leadtime to assemble Part B in-house is 1 week. The leadtime to produce Part C in-house is 4 weeks. You currently have no inventory of finished widgets and no inventory of Part A, Part B, or Part C. If your first demand for widgets is in week 9, in what week do you need to start making ("planned order release") Part C?

b) As above, widgets are made of Part A, Part B, and Part C. Additionally, Part B is assembled from Part D and Part A. Part D is made up of Part Q and Part P. Given that the lower-level code for the Widget is 0, what is the LLC for Part Q?

C) Using the above information, what is the low-level code (LLC) for Part A?