You meet Samuel at a party on campus, and he tells you that he enjoys building computers and robots, and loves math. You determine that Samuel must be an engineering student and not a liberal arts student, even though there are many more liberal arts students at your school. In making this judgment, you have: A. avoided using a representative heuristic. B. ignored diagnostic information and relied only on base-rate information. C. demonstrated base-rate neglect. D. established a gambler's fallacy.