Which of the following statements is true of the Ego, according to Freud ?

In Sigmund Freud's structural model of the psyche (The Ego and the Id, 1923), the id exists from birth, follows the pleasure principle, and is untouched by logic or external reality. The ego develops out of the id under the influence of the external world, follows the reality principle, and channels desexualized libidinal energy drawn from the id to form and sustain the superego.