What Actual Event Could Have Been Predicted Based on the Results

Multiple Choice

What actual event could have been predicted based on the results of Zimbardo's classic prisoner study at Stanford University?

A) the prison break at Attica prison in New York
B) the events in Waco,Texas,in which followers of a cult were killed by government agents
C) the events at Abu Gharib prison in Iraq
D) the attacks on the World Trade Center on September 11,2001