Steve is a baseball fan. He regularly goes to games right after work without eating food. Therefore, he hopes that the food and drink vendors will visit his section of the stand frequently. Bart, on the other hand, regularly has dinner elsewhere before he attends games and has a lower level of desired service from the food and drink vendors at the ballpark.
In this example, Steve and Bart have different that shape their desired level of service.

A. Personal service philosophies
B. Personal needs
C. Predicted service levels
D. Derived service expectations
E. Adequate service expectations