Regarding Freud's psychoanalytic theory, which of the following statements is FALSE?

Regarding Freud's psychoanalytic theory, which of the following statements is FALSE?
 
  a. Freud suggested that animal drives and instinctual pleasures are contained in the id.
  b. Freud uses the reality principle and the pleasure principle to explain the governing principles of the ego and the id.
  c. Freud believed that the id, ego, and superego were structures in the brain that would eventually be located. d. The id is proposed to be the only psychic structure that is present at birth.
  e. Freud felt that the superego develops between ages three and five.