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
Chewing stroke starts from? 
Select and explain. 
A. CO, B. CR, C. Maximum intercuspation, D. CR or CO depends on patient to patient
D: CR or CO depends on patient to patient
Answer: D: CR or CO depends on patient to patient 
Explanation: None