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: Medicine
[{'content': 'Invesstigation of choice for interstitial disease is \nSelect and explain. \nA. Chest X-ray, B. HRCT, C. Gallium-67 DTPA scan, D. MRI', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]