All of the following statements are true about Kohlberg's moral development theory except one. Which statement is false?

a. Progression to higher levels is automatic.
b. "You scratch my back and I'll scratch yours" is the reasoning behind the pre-conventional stage.
c. In the conventional stage, "good" is what pleases, helps or is approved by others.
d. The highest level of the post-conventional stage stresses individual conscience and its abstract concepts of justice, human dignity and equality.