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: Psychiatry
[{'content': 'Disorientation occurs in \nSelect and explain. \nA. Schizophrenia, B. Organic Brain Syndrome, C. Depression, D. Mania', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Organic brain syndrome', 'role': 'assistant'}]