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
Largest tooth in the mandibular arch is: 
Select and explain. 
A. Canine, B. Deciduous first molar, C. Permanent first molar, D. Third molar
C: Permanent first molar
Answer: C: Permanent first molar 
Explanation: None