Which of the Following Would Tend to Increase the Difference

Multiple Choice

Which of the following would tend to increase the difference between the actual time customers spent waiting and the perceived time spent waiting by those customers?
(I) Lots of experience with the service on the part of customers(II) Anxiety on the part of customers(III) A pleasant physical environment for the customers

A) I and II only
B) I only
C) II only
D) III only
E) I, II, and III