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
What&;s the most likely diagnosis? 
Select and explain. 
A. TB, B. Klebsiella pneumonia, C. Pneumocystis pneumonia, D. Pneumococcal Pneumonia
D: Pneumococcal Pneumonia
Answer: D: Pneumococcal Pneumonia 
Explanation: Pneumococcal Pneumonia : Produces inflammatory edema in the alveoli which spreads Via POres Kohn to more lateral alveoli. Extensive infiltrate usually abutting pleural surface. Prominent air bronchograms Organism is aspirated into the lungs from. the upper airways so it shows Predllection for lower lobes. Ref : David Sutton 9th ed