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
[{'content': 'Mood disorder is: MP 07 \nSelect and explain. \nA. Psychosis, B. Disturbance in affect, C. Anxiety, D. Neurosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Disturbance in affect', 'role': 'assistant'}]