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
All of the following are true about loculated pleural effusion except- 
Select and explain. 
A. It makes an obtuse angle with the chest wall, B. The margins are diffuse when viewed end on, C. Not confined to any bronchopulmonary segment, D. Air bronchograms are seen within the opacity
D: Air bronchograms are seen within the opacity
Answer: D: Air bronchograms are seen within the opacity 
Explanation: D i.e. Air bronchogram are seen within the opacity