This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth and development, Subject name: Pediatrics
[{'content': '1st Permanent teeth to appear ______________ \nSelect and explain. \nA. Molor, B. Premolor, C. Incisor, D. Cannine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Permanent teeth begin to come in around the age of 6. In some children, the first permanentmolars are the first to emerge; in others, the incisors are the first to emerge. By the age of 13, most of the 28 permanent teeth will be in place. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]