Week Beg. Inv. Production Schedule for X 6 Quantity 80 Beg Week 4 2 3 Inv. Part X * Gross requirements Scheduled receipts On hand Net requirements Planned order receipt Planned order release Week Part B Beg Inv om 67 Gross requirements Scheduled receipts On hand Net requirements Planned order receipt Planned order release | Week Part D Beg 6 Gross requirements Scheduled receipts On hand Net requirements Planned order receipt Planned order release 3. Eighty units of product X are needed at the beginning of week 6, and another 30 units are needed at the begin- ning of week 8. Prepare the material requirements plan for component D, B, and X. D can be ordered only in whole cases (50 units per case). One case of D is auto- matically received every other week, beginning in week 1 (i.e., week 1, 3, 5, 7). Also, there are 30 units of B and 20 units of D on hand now. Lead times for all items are al function of quantity: one week for up to 100 units, two weeks for 101 to 200 units, three weeks for 201 to 300 units, and four weeks for 301 or more units. L03) B(2) D(3) D(2) F(2) B1 = B2 B3 = B4 = B6 = B7 = B8 B9 = B10 =