The Creation of a Schizophrenia Spectrum Most Directly Suggests That

The creation of a schizophrenia spectrum most directly suggests that

A) schizophrenia may overlap with other disorders, such as dissociative identity disorder.
B) the five subtype classification system is outdated.
C) the vulnerability theory is unable to account for all schizophrenia clusters.
D) clusters of schizophrenia symptoms may develop differently and require different treatment.