This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
[{'content': 'Air bronchogram in Chest- Xray is found in all except \nSelect and explain. \nA. Pleural effusion, B. Consolidation, C. Pulmonary oedema, D. Alveolar cell carcinoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Causes of Air Bronchograma. Pulmonary oedemab. Pneumonic consolidationc. Hyaline membrane diseased. Lymphomae. Alveolar cell carcinomaf. Sarcoidosisg. ARDSh. Alveolar proteinosis', 'role': 'assistant'}]