After the First Few Lectures, Karen Thought That Her Psychology

After the first few lectures, Karen thought that her psychology teacher was the best teacher she had ever had and cared about whether Karen succeeded in her class. However, when Karen received a low grade on her first test, she decided that this teacher was a terrible, uncaring teacher, who wanted her to fail. Karen is exhibiting

A) all-or-nothing thinking.
B) selective perception.
C) overgeneralization.
D) incomplete rationalization.