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
Which incisor has most commonly 2 roots ? 
Select and explain. 
A. Lower Central incisor, B. Lower Lateral incisor, C. Upper Central incisor, D. Upper lateral Incisor
A: Lower Central incisor
Answer: A: Lower Central incisor 
Explanation: None