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
How early can gutta percha be removed after root canal obturation to prepare post space 
Select and explain. 
A. Immediately, B. 24 hours, C. 48 hours, D. Can be removed after one week
A: Immediately
Answer: A: Immediately 
Explanation: No difference in apical seal is observed when Gp is removed immediately or after a week from the root canal.