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
Terminal end of retentive arm of extra coronal retainer is
placed at 
Select and explain. 
A. Gingival third, B. Occlusal third, C. Middle third, D. Junction of middle & Gingival third
A: Gingival third
Answer: A: Gingival third 
Explanation: None