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': 'The eight stage classification of human life is proposed by \nSelect and explain. \nA. Sigmund freud, B. Pavel, C. Strauss, D. Erikson', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Erikson', 'role': 'assistant'}]