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 posterior tooth that gives a better support is: \nSelect and explain. \nA. With convergent roots, B. Divergent roots, C. Conical roots, D. Curved roots', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]