Awesome Products Company manufactures a product sold to retailers. It is considering suppliers for its process. The supplier quality involves four activity areas:

Activity Area	Cost Driver and Rate
Order cost	$120 per purchase order
Defective units	$200 per unit internal failure costs
Delivery trips	$5 per delivery mile
Carrying cost	$1 per order

The following supplier information is given:

	X3	Y2	Z1
Materials units needed	100,000	100,000	100,000
Actual purchase price	$5	$4.99	$5.01
Number of purchase orders	20	30	18
Number of defects	6	12	0
Number of deliveries	20	30	18

Which supplier has the most defective units?

a.Z1

b.Y2

c.X3

d.They are equal.