This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Bipolar disorder is a: TN 11 
Select and explain. 
A. Mood disorder, B. Neurotic disorder, C. Behavior disorder, D. Personality disorder
A: Mood disorder
Answer: A: Mood disorder 
Explanation: Ans. Mood disorder