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': 'An adult male is admitted with history of  pneumonia. The patient is unconscious and is alcoholic past 10 years. What is drug of choice in treatment of pneumonia \nSelect and explain. \nA. Tab Amoxicillin 500mg, B. Tab Azithromycin 500mg, C. Inj Clindamycin 600mg, D. Inj Levofloxacin 500mg', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In an Alcoholic patient with pneumonia, suspect Bacteroides\xa0Fragilis. The drug of choice is Clindamycin.', 'role': 'assistant'}]