Which of the Following Best Illustrates the Concept of Confirmation

Which of the following best illustrates the concept of confirmation bias?

A) You are a proponent of gun control. You seek out news sources and stories that affirm your beliefs about gun control.
B) After meeting someone who, prior to the meeting, you believed to be rude, you say that you have always admired that person.
C) You are much less likely to accept a task at work that is difficult for you than one that is easy for you.
D) You prefer to solve challenging problems because you view yourself as intelligent.