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
Which of the following to reduce for occlusal equilibration: 
Select and explain. 
A. Upper buccal, B. Lower buccal, C. Upper lingual, D. Both AB
A: Upper buccal
Answer: A: Upper buccal 
Explanation: None