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
Commonly encountered complication during extraction of maxillary third molar is 
Select and explain. 
A. Oro-antral communication, B. Root displacement into sinus, C. Excessive hemorrhage, D. Fracture of the maxillary tuberosity
D: Fracture of the maxillary tuberosity
Answer: D: Fracture of the maxillary tuberosity 
Explanation: None