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': 'Perihilar fluffy opacities on chest X-ray is seen in – \nSelect and explain. \nA. Sarcoidosis, B. Pulmonary edema, C. Silicosis, D. Lung carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fluffy perihilar opacities projecting into lung parenchyma is seen in\xa0pulmonary edema\xa0which gives\xa0"Bat-wing" appearance.', 'role': 'assistant'}]