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': 'Early childhood caries or baby bottle tooth decay is usually seen in the age group of _____ month old child? \nSelect and explain. \nA. 18-36, B. 24-36, C. 18-Jun, D. 18-Dec', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Early childhood caries or baby bottle tooth decay is usually seen in the 18\xa0to 36 month old child, although it can be seen even in younger patients.', 'role': 'assistant'}]