Why Is the Categorical Approach to Classification Problematic in the DSM

Why is the categorical approach to classification problematic in the DSM?

A) Even if a person has all the symptoms of a disorder,they will not necessarily be diagnosed with a mental disorder.
B) There may not be enough categories to cover every disorder.
C) Too many people are classified as having a mental disorder.
D) Some people may have difficulties,but would not be diagnosed as disordered.
E) Not all people diagnosed with the same disorder behave the same way.