Consider the MPS, BOM, and inventory data shown.

The following table shows the MPS start quantities for the next 10 weeks.

Finished Item A	1	2	3	4	5	6	7	8	9	10
MPS start time for Item A	20		60		40		20	40

Bill of Material:

- Item A uses 2 units of component B, 1 unit of component C.

- Subassembly B uses 2 units of component D.

Selected Inventory Data:

Item	Lot Sizing Rule	Lead Time	Scheduled Receipts	On-Hand
B	L4L	1	80 in period 1	0
C	FOQ = 50	2		40
D	FOQ = 200	1		80

Construct the MRP schedule using the preceding information.

a) Draw the BOM

b) Complete MRP for Item B

c) Complete MRP for Item C

d) Complete MRP for Item D