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
When pulp cannot be extirpated in narrow canals, which of the following can be used 
Select and explain. 
A. Obtundant, B. Astringent, C. Haemostatic, D. Mummifying agent
D: Mummifying agent
Answer: D: Mummifying agent 
Explanation: None