Which of the Following Statements About Customer Expectations Is Incorrect

Which of the following statements about customer expectations is incorrect?

A) If a company is facing a clash between efficiency expectations and the need to provide high levels of customer service, most customers will expect efficiency to come first and friendliness second.
B) After the first service encounter customers will place increasing reliance on advertising and promotion rather than experience.
C) Customer service expectations are not likely to change over time.
D) Both a and c.
E) Both b and c.