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
Width of division B bone is about 
Select and explain. 
A. <2.5 mm, B. 2.5-5 mm, C. >5 mm, D. None of the above
B: 2.5-5 mm
Answer: B: 2.5-5 mm 
Explanation: None