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': 'Best pontic for maxillary posterior teeth is: \nSelect and explain. \nA. Point contact, B. Composite, C. Trupontic, D. Bullet nose', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]