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: Radiology
[{'content': 'Best investigation for VUR is ? \nSelect and explain. \nA. IVU, B. MCU, C. Retrograde pyelogram, D. Retrograde urethrogram', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., MCUInvestigation of choice for VUR > Voiding/micturating cystourethrogram.", 'role': 'assistant'}]