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
WHO defines adolescent age between ? 
Select and explain. 
A. 10-19 years of age, B. 10-14 years of age, C. 10-25 years of age, D. 9-14 years of age
A: 10-19 years of age
Answer: A: 10-19 years of age 
Explanation: Ans. is 'a' i.e., 10 - 19 Years of age