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
Width of the periodontal ligament is least at 
Select and explain. 
A. Cervical third, B. Apical third, C. Fulcrum of rotation, D. It has uniform width
C: Fulcrum of rotation
Answer: C: Fulcrum of rotation 
Explanation: None