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: Social & Preventive Medicine
[{'content': 'WHO defines adolescent age between ? \nSelect and explain. \nA. 10-19 years of age, B. 10-14 years of age, C. 10-25 years of age, D. 9-14 years of age', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 10 - 19 Years of age", 'role': 'assistant'}]