What Was the Basis for Freud's Development of His Theory

What was the basis for Freud's development of his theory of the Oedipus conflict?

A) He did not believe that the stories his female patients told about having been sexually abused by their fathers and other family members were real memories.
B) He felt that we were biologically pre-wired to go through this conflict at certain ages, regardless of our surroundings or experiences.
C) He felt that women, by definition, were born neurotic and the Oedipus conflict gave value to that belief.
D) He observed that all women were unconsciously angry at their own children, and developed the theory of the Oedipus conflict as a result.