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 highest point of the concavity behind the occipital condyles 
Select and explain. 
A. Bolton point, B. Glabella, C. Prosthion, D. Basion
A: Bolton point
Answer: A: Bolton point 
Explanation: None