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': 'What is column of Beini in kidney? \nSelect and explain. \nA. Renal tumor, B. Tongue like papillary projection, C. Calculus, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., tongue like papillary projection", 'role': 'assistant'}]