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
Trachoma screening is done on which of the following age-groups? 
Select and explain. 
A. <5 years, B. 5-10 years, C. 1-9 years, D. 5-15 years
C: 1-9 years
Answer: C: 1-9 years 
Explanation: None