a. Briefly explain why record accuracy is a must in material requirement planning! (5%) b. PT. POSO, a company that manufactures electrical appliances, is planning to launch a new refrigerator. The critical part of the new refrigerator, part D, has the following bill of material. Compute the planned order releases and projected on-hand balances for parts D, F, L, and M by completing the tables!

D F R Z required 3 required M 2 required 1 3 6 2 11 5 8 7 9 5 6 Part D Gross Requirements Scheduled Receipts Projected On-Hand=10 Net Requirements Planned Order Receipts Planned Order Release LT = 1: Lot sizing = LFL 2 3 4 5 6 20 Part F Gross Requirements Scheduled Receipts Projected On-Hand = 40 Net Requirements Planned Order Receipts Planned Order Release LT = 1: Lot sizing = LFL 2 3 4 5 6 10 Part 1 Gross Requirements Scheduled Receipts Projected On-Hand = 10 Net Requirements Planned Order Receipts Planned Order Release LT = 1; Lot sizing = LFL 2 3 4 5 6 10 Part M Gross Requirements Scheduled Receipts Projected On-Hand = 10 Net Requirements Planned Order Receipts Planned Order Release LT = 1; Lot sizing = LFL