The term "postformal thought" originated with:. A. Freud, when he realized Piaget's fourth stage did not adequately describe adult thought. B. Other psychologists, who believed Piaget's fourth stage did not adequately describe adult thought. C. Other psychologists, after they consulted with Piaget about the inadequacy of his fourth stage. D. Piaget, when he realized his fourth stage did not adequately describe adult thought.