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: Pharmacology
[{'content': 'Antibiotic of choice for Stenotrophomonas maltophilia infection is: \nSelect and explain. \nA. Ampicillin, B. Trimethoprim-sulfamethoxazole (TMP-SMX), C. Penicillin, D. Ciprofloxacin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans: b. Trimethoprim-sulfamethoxazole (TMP-SMX)', 'role': 'assistant'}]