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
[{'content': 'Single furcation canal is seen in what percentage of mandibular molars \nSelect and explain. \nA. 13%, B. 10%, C. 23%, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: There are three patterns for accessory canals in mandibular molars\n\nSingle accessory canal arises from coronal 1/3rd = 23%\nSingle furcation canal: 13%\nBoth accessory canal and Furcation canals : 10% of cases', 'role': 'assistant'}]