You and Your Friend Just Met a Woman at the Bookstore

You and your friend just met a woman at the bookstore, and she recommended a very good book to you. You guess, based on her appearance and demeanor, that she is a teacher. Your friend suggests that she is a teacher and also a writer. What should you think about your friend's suggestion?

A) Your friend has used an availability heuristic to decide that the woman must be a writer as well as a teacher.
B) It's a very good idea, because being a teacher increases the likelihood that she is also a writer.
C) Your friend has used the conjunction fallacy, assuming that the odds of two events occurring together are more likely that the odds of either event happening alone.
D) Your friend has just used the representativeness heuristic to arrive at a conclusion.