This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Normal weight of infant at 1 year from bih is: September 2007 
Select and explain. 
A. Doubled, B. Trippled, C. Quadrupled, D. Variable increase
B: Trippled
Answer: B: Trippled 
Explanation: Ans. B: Trippled Normal Weight Increases: Weight doubles by 6 months of age Weight triples by 1 year of age Weight quadruples by 2 years of age Annual increase (Ages 2-9): 2.0 kg/year