Dr. Sedakis is explaining the criterion for defining abnormal behavior to the students in his Abnormal Psychology class. Dr. Sedakis should say:

A. "If behavior is atypical, interferes with daily functioning, causes distress to the people exhibiting it, and is perceived as deviant by others, it is considered abnormal."

B. "Behavior that is atypical, or relatively rare, is considered abnormal, and this is the only criterion that needs to be considered."

C. "To determine whether behavior is abnormal, you need only ask the people exhibiting it if it is upsetting to them. If they say yes, it is considered abnormal."

D. "Behavior is considered abnormal if it is maladaptive; this criterion alone is sufficient for defining abnormality."