This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
Upper segment to lower segment ratio in 3 years age child is: 
Select and explain. 
A. 1.2:1, B. 1.3:1, C. 1.4:1, D. 1.6:1
B: 1.3:1
Answer: B: 1.3:1 
Explanation: b. 1.3:1(Ref: Nelson's 20/e p 2643, Ghai 8/e p 35-37)Normal upper segment to lower segment ratio in children:Newborn 1:7-1.9:1=3years-1:3:1=7years-1:1Q.