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
Will's gauge is used to measure 
Select and explain. 
A. Vertical height, B. Bi-zygomatic width, C. Inter condylar distance, D. Inter papillary width
A: Vertical height
Answer: A: Vertical height 
Explanation: None