One Important Reason Some Psychologists Are Skeptical of Dissociative Identity

One important reason some psychologists are skeptical of dissociative identity disorder is that:

A) the number of reported cases has increased dramatically in the early 1970s.
B) several famous dissociative identity disorder patients have publicly admitted that they were faking their symptoms in order to gain fame and make money.
C) dissociative identity disorder is easy to produce through hypnotic suggestion and can also be easily cured by hypnosis.
D) the symptoms of dissociative identity disorder are also present in schizophrenia, a much more likely diagnosis.