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
A patient underwent extraction of 3rd molar experiences pain in socket on 3rd day; socket is tender with no fever and swelling: what treatment should be done 
Select and explain. 
A. Irrigation of socket with sedative placement and analgesic, B. Curettage of socket and induces bleeding, C. Left untreated and observe for few days, D. Start antibiotics followed by curettage of socket
A: Irrigation of socket with sedative placement and analgesic
Answer: A: Irrigation of socket with sedative placement and analgesic 
Explanation: None