Your Text Describes an Experiment in Which Students Could Choose

Your text describes an experiment in which students could choose to play competitively or cooperatively in a game either called the "Wall Street Game" or the "Community Game." Which of the following is a valid conclusion to reach based on the results of that experiment?

A) It takes major changes in the social environment to overcome the powerful influence of personality traits such as competitiveness.
B) Personality characteristics change from situation to situation.
C) Friends and acquaintances were better able to predict the behaviour of these students than were the psychologists.
D) Personality differences are not important when it comes to predicting behaviour.
E) Even seemingly trivial aspects of the social situation can greatly influence behaviour.