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': 'In the posterior maxilla, the pontic of choice is \nSelect and explain. \nA. Sanitary, B. Point contact, C. Bullet shaped, D. Modified ridge lap', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]