Peter finally got up the courage to see a therapist after struggling with depression

When discussing his issues with his psychoanalytic therapist, Peter told his therapist that he was sexually assaulted by his previous college roommate. Though Peter was aware that the assault took place, he could not remember any of the painful details of the situation. Which of the following is Peter's therapist likely to say?
a) "Peter, you are likely experiencing a fixation from the unsuccessful resolution of the Oedipus complex."
b) "Those details serve no importance in the type of therapy I provide. We will just work to reduce the symptoms of your depression."
c) "Peter, don't worry about not remembering the painful details. They are better off left alone."
d) "Peter, you are likely experiencing repression. Once we work through the painful details of that traumatic event, your depression will lift and you will feel much better."

Answer: d