This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
[{'content': 'In which of the following conditions water soluble contrast media is used \nSelect and explain. \nA. Constipation, B. Perforation, C. Ileocecal tuberculosis, D. GERD', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Ref: Grainger and Allison&;s diagnostic radiology 6th edition, chapter 25)', 'role': 'assistant'}]