Which of the Following Is True About the Diagnostic Criteria

Which of the following is true about the diagnostic criteria of a manic episode?

A) Sustained elevated, expansive, or irritable mood must last minimum of 2 weeks.
B) If mood is irritable, at least 4 additional symptoms are needed.
C) Severe impairment in functioning is not required to meet criteria.
D) If mood is elevated, at least 5 additional symptoms are needed.