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': "The most important determinant of prognosis in Wilm's tumor is - \nSelect and explain. \nA. Stage of disease, B. Loss of heterozygosity of chromosome 1p, C. Histology, D. Age less than 1 yr at presentation", 'role': 'user'}, {'content': 'Answer: C \nExplanation: "The histology of Wilm\'s tumor was identified as the most important determinant of prognosis." - Devita\'s Cancer', 'role': 'assistant'}]