This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Subject name: Pediatrics
The weight of the child at 3 years is usually ___ times the bih weight? 
Select and explain. 
A. 3, B. 4, C. 5, D. 7
C: 5
Answer: C: 5 
Explanation: The increase in the weight of the child with age- Age Weight (kg) Bih w 5 months 2w 1 year 3w 2 years 4w 3 years 5w