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: WHO / UN Definitions: Adolescent age = 10-19years Youth - 15-24 years Young people - 10-24 years Ref: Ghai Essential Pediatrics By O. P. Ghai, Piyush Gupta, V. K. Paul, 6th Edition, Page 66; Cambridge Handbook of Psychology, Health and Medicine By Susan Ayers, Andrew Baum, Chris McManus, 2007, Page 5', 'role': 'assistant'}]