In the DSM-V, Personality Disorders May Be Redefined Using Dimensions

In the DSM-V, personality disorders may be redefined using dimensions rather than categories because

A) there is too much overlap among the symptoms of the different disorders.
B) the clusters help to categorize but are not based on scientific evidence.
C) because individuals demonstrate a high degree of comorbidity, often having two or three personality disorders.
D) all of the above