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
Incidence of 2 canals in mandibular incisors is 
Select and explain. 
A. 3 - 12%, B. 12 - 20%, C. 20 - 41%, D. Less than 3%
C: 20 - 41%
Answer: C: 20 - 41% 
Explanation: None