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': 'Investigation of choice for detection and characterization of interstitial lung disease is \nSelect and explain. \nA. MRI, B. Chest x-ray, C. Venlaon perfusion scan, D. High resoluon CT', 'role': 'user'}, {'content': 'Answer: D \nExplanation: High Resoluon CT (HRCT) is investigation of choice for interstitial lung disease as it can delineate the lung parenchyma upto the level of secondary pulmonary lobule.', 'role': 'assistant'}]