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: Surgery
[{'content': "Good prognosis in Wilm's tumour is seen in ? \nSelect and explain. \nA. 2-5 years, B. Less than 1 year, C. Male child, D. Female child", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Less than 1 year", 'role': 'assistant'}]