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
Sealer penetration into dentinal tubule depends mainly on? 
Select and explain. 
A. Type of sealer used, B. Method of obturation, C. Not Recalled, D. Not Recalled
B: Method of obturation
Answer: B: Method of obturation 
Explanation: None