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': 'Anatomic teeth should have cusp angle of \nSelect and explain. \nA. 30°, B. 31°, C. 32°, D. 33°', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]