Matthew Is Sure That His Calculus Teacher, Dr

Matthew is sure that his calculus teacher, Dr. Ybarra, is going to be a bad teacher. He does not believe that women can be particularly good at math. As a result Matthew fools around in class and frustrates Dr. Ybarra to the point where she stops teaching as passionately as she otherwise might. Matthew tells his friends, "I told you she couldn't teach math well!" This is an example of a(n)

A) internal downward social comparison.
B) fundamental attribution error.
C) actor-observer bias.
D) self-fulfilling prophecy.