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
Crown root ratio in Permanent dentition is 
Select and explain. 
A. 1:04, B. 1:02, C. 1:03, D. 1:01
B: 1:02
Answer: B: 1:02 
Explanation: None