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': 'Onanism is a disorder of \nSelect and explain. \nA. Stealing, B. Gambling, C. Sexual detion, D. Hair pulling', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sexual detion', 'role': 'assistant'}]