What Did the "Quiz Show" Study by Ross and Colleagues

What did the "Quiz Show" study by Ross and colleagues find about judging the general knowledge of the contestant and questioner?

A) Observers made the fundamental attribution error,but the questioner and contestant did not.
B) Participants did not make the fundamental attribution error because they knew that the quiz show roles were assigned at random.
C) Observers and contestants made the fundamental attribution error to the same degree.
D) Men were more likely to commit the fundamental attribution error than women.