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
[{'content': 'Upper segment to lower segment ratio in 3 years age child is: \nSelect and explain. \nA. 1.2:1, B. 1.3:1, C. 1.4:1, D. 1.6:1', 'role': 'user'}, {'content': "Answer: B \nExplanation: 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.", 'role': 'assistant'}]