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
During gothic arch tracing apex indicates 
Select and explain. 
A. Centric occlusion, B. Horizontal jaw relations, C. Centric relation, D. Physiologic rest position
C: Centric relation
Answer: C: Centric relation 
Explanation: None