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
Which of the following post is recommended: 
Select and explain. 
A. Active, B. Passive., C. Both, D. Any of the above.
B: Passive.
Answer: B: Passive. 
Explanation: Active screw can lead to root fracture.