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
What is intermediate cementum: 
Select and explain. 
A. Cementum present between acellular and cellular cementum., B. Narrow zone of highly calcified tissue between cementum and dentin., C. It is formed before tooth eruption., D. None of the above.
B: Narrow zone of highly calcified tissue between cementum and dentin.
Answer: B: Narrow zone of highly calcified tissue between cementum and dentin. 
Explanation: Intermediate cementum
-Hyaline layer of Hopewell Smith
-Narrow zone of Highly calcified tissue b/w cementum & dentin