Rick Lee, a milk deliveryman in New York, delivers dairy products to 200 customers weekly. The quality of the service Rick provides to his customers is based on customer expectations. All of the following determine the expectations of Rick's customers EXCEPT:

A) customer needs for fresh milk delivered weekly.
B) customer experiences with milk from a grocery store.
C) Rick's ability to provide the anticipated dairy products.
D) word-of-mouth comments about Rick's product and service.
E) changing shifts in demand for local produce and dairy products.