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': "Persistence of distal part of vitello intertimal duct is \nSelect and explain. \nA. Meckel's diverticulum, B. Raspberry tumour, C. Peritoneal mice, D. None of the above", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Respberry tumour :\n\nIt is persistence of distal part of vitello - intestinal duct.\nAlso called as Umbilical adenoma.', 'role': 'assistant'}]