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
Entrance into the sinus in a Caldwell procedure is made through the 
Select and explain. 
A. Malar eminence, B. Canine fossa, C. Tuberosity, D. Zygomatic ridge
B: Canine fossa
Answer: B: Canine fossa 
Explanation: None