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': 'Which of the following post is recommended: \nSelect and explain. \nA. Active, B. Passive., C. Both, D. Any of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Active screw can lead to root fracture.', 'role': 'assistant'}]