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
Investigation of choice for detection & characterization of interstitial lung disease is – 
Select and explain. 
A. MRI, B. Chest X-ray, C. High resolution CT scan, D. Ventilation perfusion scan
C: High resolution CT scan
Answer: C: High resolution CT scan 
Explanation: HRCT is the investigation of choice for interstitial lung disease.