All of the Following Are Ways That the Milgram Studies

All of the following are ways that the Milgram studies do not correspond to the actualities of mass killing and genocide, EXCEPT:

A) The participants in the Milgram studies were assured by a strict but nonetheless apparently benevolent expert that no real harm would befall the "learner."
B) If participants were given an excuse to avoid obeying the experimenter, they would generally avoid administering shocks.
C) Milgram's participants demonstrated little mental conflict or anguish when delivering the shocks.
D) The Milgram studies lasted approximately 1 hour.