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: Pathology
Lung abscess is common following ... pneumonia - 
Select and explain. 
A. Streptococcal, B. Staphyloccocal, C. Viral, D. Klebsiella
D: Klebsiella
Answer: D: Klebsiella 
Explanation: After pneumonia, absess formation is particularly common with klebsiella and type 3 pneumococci infection.