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
Smallest mesiodistal diameter is seen in 
Select and explain. 
A. Deciduous lower central incisor, B. Permanent lower central incisor, C. Deciduous upper lateral incisor, D. Permanent upper lateral incisor
A: Deciduous lower central incisor
Answer: A: Deciduous lower central incisor 
Explanation: None