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
In a lateral cephalogram, the distance at which the film is placed from the mid-sagittal plane is: 
Select and explain. 
A. 10 cms, B. 12 cms, C. 15 cms, D. 18 cms
C: 15 cms
Answer: C: 15 cms 
Explanation: None