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
False about radiological features of pulmonary edema 
Select and explain. 
A. Bat - wing appearance, B. Air bronchogram, C. Increased density in perihilar, D. Involvement of peripheral zones of lung fields
D: Involvement of peripheral zones of lung fields
Answer: D: Involvement of peripheral zones of lung fields 
Explanation: There is relative sparing of the more peripheral zones of lung fields.