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': 'Investigation of choice for detection & characterization of interstitial lung disease is – \nSelect and explain. \nA. MRI, B. Chest X-ray, C. High resolution CT scan, D. Ventilation perfusion scan', 'role': 'user'}, {'content': 'Answer: C \nExplanation: HRCT is the investigation of choice for interstitial lung disease.', 'role': 'assistant'}]