In Milgram's Original Obedience Experiment, Subjects Who Were Assigned the Role

In Milgram's original obedience experiment, subjects who were assigned the role of teacher:

A) were deceived about the real role of the learner and the level of shock that he actually received.
B) were told to stop whenever they felt the slightest discomfort about what they were doing.
C) seemed to enjoy shocking the learner, especially at the higher voltage levels.
D) quickly figured out the learner was not really getting shocked.