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': 'In a patient with Listeria meningitis who is allergic to penicillin, the antimicrobial of choice is ? \nSelect and explain. \nA. Vancomycin, B. Gentamicin, C. Trimethoprim-sulphamethoxazole, D. Ceftriaxone', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Trimethoprim-sulphamethoxazole TIT of listeria monocytogenes meningitis Penicillin sensitive Ampicillin + Gentamicin Penicillin allergic Trimethoprim and Sulphamethoxazole.", 'role': 'assistant'}]