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
MB2 (In maxillary first molar)can be seen through Dental operating microscope in what percentage of cases 
Select and explain. 
A. 90-95%, B. 70-85%, C. 62-70%, D. 30-40%
A: 90-95%
Answer: A: 90-95% 
Explanation: None