This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Height of the child is double the bih weight at the age of - 
Select and explain. 
A. 1 year, B. 2 years, C. 4 years, D. 9 months
C: 4 years
Answer: C: 4 years 
Explanation: O.P. Ghai 9th Edition : p. 13 An infant usually doubles his bih height by the age of 4 years.