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': "A malignant tumor of childhood, that metastasizes to bones most often is - \nSelect and explain. \nA. Wilm's tumor, B. Neuroblastoma, C. Adrenal gland tumors, D. Granulosa cell tumor of ovary", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. Neuroblastoma Neuroblastoma is the most common tumor of children to metastasize to bones.", 'role': 'assistant'}]