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
[{'content': 'Birth weight doubles by? \nSelect and explain. \nA. 3 months, B. 5 months, C. 9 months, D. 12 months', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) 5 monthsRef O.P Ghai 8th ed/4Birth weight doubles at 5 months, triples in an year and is four times at 2 years and becomes 5 times at 3 years.Note: Newborns lose 10% of body weight in first ten days due to loss of extracellular water, after which they gain 25-30gms per day for first 3 months of life.', 'role': 'assistant'}]