This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnostic and operative ENT, Subject name: ENT
Most common complication of Caldwell-Luc operation is 
Select and explain. 
A. Oroantral fistula, B. Orbital cellulitis, C. Hemorrhage, D. Infraorbital nerve palsy
D: Infraorbital nerve palsy
Answer: D: Infraorbital nerve palsy 
Explanation: M/C Complication of Caldwell-Luc operation is injury to infraorbital nerve which occurs is 21 % cases. Ref:- Scott Brown 7th edition; pg num:- 1494