Given the Role of Informational and Normative Social Influence Processes

Given the role of informational and normative social influence processes in contributing to participants' willingness to shock a confederate learner (e.g., Milgram, 1974) , which of the following situations would yield the LEAST obedience?

A) The experimenter administers shocks to himself to demonstrate that the shocks are not lethal.
B) The experimenter tells participants that the learner will later be allowed to administer shocks to them.
C) The experimenter tells participants that the best teacher will be awarded a prize at the conclusion of the experiment.
D) Before leaving the room, two experimenters disagree on instructions before finally telling participants to take their time and choose their own shock levels.