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: Medicine
[{'content': 'Friedlander Pneumonia refers to Pneumonia caused by \nSelect and explain. \nA. Klebsiella, B. Pneumococcus, C. H. Influenzae, D. Staphylococcus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Klebsiella Klebsiella Pneumonia is also known as "Friedlander Pneumonia". Klebsiella initially described in 1882 by Friedlander was also known as Friendlander\'s bacillus. Community acquired Pneumonia caused by Friendlander\'s bacillus (Klebsiella) was termed as Friedlander Pneumonia', 'role': 'assistant'}]