The My Lai Massacre: a Crime of Obedience? (From Crimes

The My Lai Massacre: A Crime of Obedience? (from Crimes of Obedience: Toward a Social Psychology of Authority and Responsibility) HERBERT
-Kelman and Hamilton's explanation of the My Lai massacre primarily implicates:

A) the social conditions, training, and system of (non) control of the killers
B) the irresponsible behavior of the persons who were injured and killed
C) the psychology of people who have lost all hope in life
D) the mass media that shows thousands of images of violence and often glorifies killing