The DSM-III Presented Significant Differences Compared to Its Predecessors

The DSM-III presented significant differences compared to its predecessors.Perhaps the MOST important change was

A) the fact that it included the number of symptoms required to meet the criterion.
B) the fact that is became more empirically-based.
C) that it required clinicians to consider five different areas of patient functioning.
D) that field trials were carried out to improve reliability.
E) the fact that it did not advocate any particular theory.