Which of the following is an example of unrealistic optimism?

A、
Curtis sees himself as more honest and ethical than the average person.
B、
Yuhao does poorly on his statistics exam but feels better about it after hearing that his friend Paul did worse.
C、
Ned smokes, and although he knows it causes a number of health problems, he does not believe this will happen to him.
D、
Mosha does not get the job she interviewed for, and she attributes this to the fact that the job was given to the owner's son.