You are tasked with selecting the supplier for a new part from four possible venders A, B, C, and D. You have data related to price, quality, delivery performance, and a sustainability score (5 is best). Assuming each of these fouraspects are equally weighted by your purchasing organization, which supplier would you choose given the following information? The critical part dimension for the quality data has a specification of 2.50.05 cm; and daily demand of 25, with a daily standard deviation of 30 units; 365 days a year. For this part your organization prefers a service level of at least 95%. Please be clear as to how you are using each piece of information.

Vender	A	B	C	D
Price/unit	$15.10	$15.35	$16.10	$14.75
, in cm	2.502	2.497	2.498	2.503
, in cm	.0125	.0115	.0110	.0120
Leadtime (days)	18	15	11	20
Leadtime Std. Dev. (days)	10	6	5	10
Sustainability Index (5 is best, 0 is worst)	4	5	4.5	3