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': 'Theory of Pshycosexual development was given by \nSelect and explain. \nA. Freud, B. Piaget, C. Skinner, D. Kaplan', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Freud', 'role': 'assistant'}]