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': 'Ground glass appearance is not seen in – \nSelect and explain. \nA. Hyaline membrane disease, B. Left to right shunts, C. Pneumonia, D. Obstructive TAPVC', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ground grass appearance is seen in right to left shunt (not in left to right shunt).\nAll other options, pneumonia (interstitial pneumonia), HMD, and obstructive TAPV, can cause ground glass appearance.', 'role': 'assistant'}]