A(n) ________ Is a Storeless Retailer Serving a Specific Clientele

A(n) ________ is a storeless retailer serving a specific clientele - usually employees of large organizations - who are authorized to buy from a list of retailers that have agreed to give discounts in return for inclusion on the list.

A) direct-selling vendor
B) direct marketing vendor
C) buying service
D) automatic vendor
E) corporate retailer