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: Pediatrics
At what age upper segment  : Lower segment ratio becomes 1 : 1? 
Select and explain. 
A. 3-6 years, B. 5-8 years, C. 7-10 years, D. 10-12 years
C: 7-10 years
Answer: C: 7-10 years 
Explanation: Age
US : LS ratio




Birth
			3 years
			7-10 years
			> 10 years
1.7 : 1
			1.3 : 1
			1 : 1
			0.9 : 1