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': 'When ICF and ECF of child becomes equal to adult person - \nSelect and explain. \nA. 1 year, B. 2 year, C. 3 year, D. 4 year', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 1 year o In fetus, ECF is much larger than ICF. o By the age of 1 year, ratio of ICF to the ECF volume approaches adult level.", 'role': 'assistant'}]