William Davies, a Guest Relations Executive at a Five-Star Deluxe

William Davies, a guest relations executive at a five-star deluxe hotel, regularly interacts with bureaucrats, politicians, celebrities, and other prosperous individuals. He feels that all rich people are kind, hardworking, and friendly. Which of the following best characterizes Davies' perception?

A) confirmation bias
B) self-serving bias
C) randomness error
D) halo effect
E) hindsight bias