When the Subjects of Milgram's Obedience Experiments Completed a Follow-Up

When the subjects of Milgram's obedience experiments completed a follow-up questionnaire, Milgram found that:

A) most of the subjects continued to be psychologically traumatized long after they had participated in the experiment.
B) approximately half of his subjects felt extremely angry and resentful for having been deceived.
C) most still had not figured out that the experiment had involved the deception of shocking the learner.
D) most said they were glad to have participated in the experiment.