Upon Testing Variations of His Original Obedience Study, Milgram Found

Upon testing variations of his original obedience study, Milgram found that

A) the original participants had conformed to the experimenter's orders only because the study was conducted at a respected institution.
B) obedience decreased as the distance between the participant and the learner was increased.
C) participants were less likely to shock the learner if he was close by than if he was in another room.
D) participants were more likely to shock the learner if other confederate teachers refused to do so.