As Cited in Your Textbook,one Reason to Use Categories in Diagnosing

As cited in your textbook,one reason to use categories in diagnosing psychopathology is that a category:

A) aids in investigations of the etiology of different disorders
B) allows psychologists to see if the person has a mild form of the disorder or an extreme form of it
C) reflects how the disorder works-either a person has the disorder or does not have it
D) creates a highly unique case study of the person's illness