This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Assessment of Growth, Subject name: Pediatrics
At what age (in years) does-a child attain a height of 100 cms? 
Select and explain. 
A. 2, B. 3, C. 4, D. 5
C: 4
Answer: C: 4 
Explanation: Ans. (c) 4 yearsRef: OP Ghai 8th ed./13* Length of Indian baby at birth=50cm* Length at 1 year=75cm* Length at 4 1/2 years= 100cm* Subsequently 5-6 cm/year* Pubertal growth spurt=6-8cm/year