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': 'Suicidal tendencies seen in: \nSelect and explain. \nA. Depression, B. Substance abuse, C. Schizophrenia, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Depression; C i.e. Schizophrenia; B i.e. Substance abuse', 'role': 'assistant'}]