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
Inorganic content of cementum is 
Select and explain. 
A. 45 to 50%, B. 50 to 55%, C. 55 to 60%, D. 60 to 65%
A: 45 to 50%
Answer: A: 45 to 50% 
Explanation: None