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: Dental
The third point of reference (common) for a facebow is 
Select and explain. 
A. Pupil of eye, B. Glabella, C. Infraorbital notch, D. None of the above
C: Infraorbital notch
Answer: C: Infraorbital notch 
Explanation: None