In the Rogers and Prentice-Dunn's Experiment on Interracial Aggression, They

In the Rogers and Prentice-Dunn's experiment on interracial aggression, they manipulated deindividuation by:

A) making both the participant and the biofeedback subject anonymous during the experiment.
B) having the participant and the biofeedback subject wear hooded robes during the experiment.
C) making the participant feel anonymous during the procedure.
D) the experimenter taking full responsibility for the biofeedback subjects well-being.