In a variation of Milgram's obedience experiment where the experimenter gave orders over the telephone, 9 out of 40 participants complied fully and proceeded to the maximum voltage of 450V. What percentage of the participants disobeyed the experimenter by refusing to go to the maximum voltage?
22.5%22.5\%22.5%
77.5%77.5\%77.5%
31.0%31.0\%31.0%
65.0%65.0\%65.0%
