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: Surgery
Pain of dry socket is experienced on: 
Select and explain. 
A. 1st day after extraction, B. 2nd day after extraction, C. 3rd day after extraction, D. after 7 days
C: 3rd day after extraction
Answer: C: 3rd day after extraction 
Explanation: None