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': 'Most symmetric tooth in oral cavity \nSelect and explain. \nA. Lower Central Incisor, B. Lower Lateral incisor, C. Upper Central incisor, D. Upper Lateral incisor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]