<prompt> Upper segment to lower segment ratio in 3 years age child is:1.2:11.3:11.4:11.6:1  <response>: b. 1.3:1Ref: Nelsons 20e p 2643, Ghai 8e p 35-37Normal upper segment to lower segment ratio in children:Newborn 1:7-1.9:13years-1:3:17years-1:1Q. 