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': 'Child changes a rattle from one hand to another at the age of - \nSelect and explain. \nA. 3 months, B. 6 months, C. 9 months, D. 1 year', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 6 months o A child can transfer objects from one hand to the other by 5-7 months.", 'role': 'assistant'}]