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': 'Balthazar grading is used for acute pancreatitis based on findings on \nSelect and explain. \nA. USG, B. CT, C. MRI, D. ERCP', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CT grading of acute pancreatitis - Balthazar grading.', 'role': 'assistant'}]