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: Dental
[{'content': 'The skeletal classification of malocclusion is given by \nSelect and explain. \nA. Calvin case, B. Martin Dewey, C. Paul Simon, D. E.H. Angle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]