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
[{'content': 'Lung abscess is common following ... pneumonia - \nSelect and explain. \nA. Streptococcal, B. Staphyloccocal, C. Viral, D. Klebsiella', 'role': 'user'}, {'content': 'Answer: D \nExplanation: After pneumonia, absess formation is particularly common with klebsiella and type 3 pneumococci infection.', 'role': 'assistant'}]