Hello, I need help with the steps needed for answering this question. I would like some help regarding the steps for solving the exercises

ng - MRP Resource Planning - MRP Exercise 5 Consider the MPS, BOM and inventory data shown. Master Production Schedule: End item A he cost to inventory Weeks 1 2 3 4 3 4 5 6 7 8 9 10 End Item A MPS Start 20 40 30 20 40 Bill of Material Item A uses 2 components D, 1 component C and 2 subassembly B. Subassembly B uses 2 components E. Lot Size: ne: 2 weeks Item Lot Sizing Rule Selected Inventory Data Scheduled Lead Time Receipts 1 week 40 in week 1 On-Hand 10 B L4L 10 POQ = 3 2 weeks 40 D FOQ = 250 1 week 100 E L4L 2 weeks 160 in week 2 a. Construct the MRP schedule using the preceding information. b. Consider that you decide to change the review policy applied to item D by imposing a safety stock of 55 units. Also consider that a periodic review model with time between orders of 3 weeks is now imposed for this item. Which changes do these new conditions imply in the MRP schedule