Dr Holt Is Working with a Client Named Sam Who

Dr. Holt is working with a client named Sam who has suffered tremendous sexual abuse during his childhood. As they begin to talk about some of the incidences of abuse, Sam suddenly changes his entire demeanor, shrinking back in his chair and using a little girl's voice who says, "Sam can't talk to you about that. If you want that information, you will have to come to me." Sam may have

A) dissociative amnesia.
B) dissociative fugue.
C) depersonalization/derealization disorder.
D) dissociative identity disorder.