The Most Important Reason Cited in the Text for Revising

The most important reason cited in the text for revising the DSM to DSM-5 is

A) to ensure that the most up-to-date terminology is used to describe disorders.
B) to ensure that classification is based upon the most current and valid research.
C) to promote selection of effective treatments.
D) to eliminate confusing symptom descriptors.
E) to reduce the overlap between disorder categories.