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
[{'content': 'A normal healthy child has a height of 100 cm and weight of 16 kg. What is his most likely age: September 2012 \nSelect and explain. \nA. 3 years, B. 4 years, C. 5 years, D. 6 years', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. 4 years Body parameters Body weight doubles at: 5 months Body weight triples at: 1 year Body length increases in 1st year by: 25 cm', 'role': 'assistant'}]