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
Good prognosis in Wilm's tumour is seen in ? 
Select and explain. 
A. 2-5 years, B. Less than 1 year, C. Male child, D. Female child
B: Less than 1 year
Answer: B: Less than 1 year 
Explanation: Ans. is 'b' i.e., Less than 1 year