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 number of point angles in a permanent mandibular first molar is: \nSelect and explain. \nA. 6, B. 8, C. 4, D. 10', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]