Research Ethics Why Would an IRB Reject the Campbell, Sanderson

Research Ethics Why would an IRB reject the Campbell, Sanderson, and Laverty (1964) study
If it were proposed today?

A) debriefing may not have corrected the harmful effects of false heart rate feedback
B) subjects were deceived about whether they were administering dangerous electric shocks
C) subjects were paralyzed and believed they were dying
D) subjects were provoked by a confederate