In 2013, Oprah Winfrey, perhaps the world's richest African American woman, was visiting Switzerland. She entered a very high-end shop, where she asked to have a closer look at a purse that was in a closed cabinet. The shopkeeper said no and hinted that her customer could not afford that item. Winfrey said that she could, but the shopkeeper again refused. Winfrey left this store and publicized the incident. The store owner's inability to listen to Winfrey's request may be attributable to

A. egocentric behavior.
B. defensiveness.
C. personal bias.
D. selective attention.

Answer: C