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
Extraction of a maxillary second molar has resulted in a perforation of the maxillary antrum 0.5 cm in diameter. An acceptable procedure would be? 
Select and explain. 
A. Caldwell-Luc procedure, B. Creation of a nasal antrostomy window for proper aeration and drainage., C. Smoothening the bone margins of the socket and placement of sutures across the socket., D. Insertion of iodoform gauze packing into the socket to allow healing by second intention.
C: Smoothening the bone margins of the socket and placement of sutures across the socket.
Answer: C: Smoothening the bone margins of the socket and placement of sutures across the socket. 
Explanation: None