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': "The most common malignant neoplasm of infancy is – \nSelect and explain. \nA. Malignant teratoma, B. Neuroblastoma, C. Wilms' tumor, D. Hepatoblastoma", 'role': 'user'}, {'content': "Answer: B \nExplanation: Neuroblastoma is the most frequently diagnosed neoplasm in infants accounting for 28-39% of neonatal malignancies' - Nelson.\nNeuroblastoma \n\nNeuroblastoma is a malignant tumor of the autonomic nervous system.\nIt has following peculiarities : -\nMost common abdominal cancer of childhood.\nMost common cancer of infancy\nMost common extra cranial solid tumor of childhood (most common solid tumor of childhood is brain tumor).\nIt is a neuroendocrine tumor, arising from any neural crest element of the sympathetic nervous system.\nPrimary tumor is localized in the localization of sympathetic nervous system.", 'role': 'assistant'}]