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
All of the following factors influence the flexibility of
the clasp EXCEPT 
Select and explain. 
A. Diameter of the clasp are, B. Length of the clasp, C. Material of the clasp, D. Tooth on which the clasp rests
D: Tooth on which the clasp rests
Answer: D: Tooth on which the clasp rests 
Explanation: None