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
Antibiotic of choice for Stenotrophomonas maltophilia infection is: 
Select and explain. 
A. Ampicillin, B. Trimethoprim-sulfamethoxazole (TMP-SMX), C. Penicillin, D. Ciprofloxacin
B: Trimethoprim-sulfamethoxazole (TMP-SMX)
Answer: B: Trimethoprim-sulfamethoxazole (TMP-SMX) 
Explanation: Ans: b. Trimethoprim-sulfamethoxazole (TMP-SMX)