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
Perihilar fluffy opacities on chest X-ray is seen in – 
Select and explain. 
A. Sarcoidosis, B. Pulmonary edema, C. Silicosis, D. Lung carcinoma
B: Pulmonary edema
Answer: B: Pulmonary edema 
Explanation: Fluffy perihilar opacities projecting into lung parenchyma is seen in pulmonary edema which gives "Bat-wing" appearance.