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': 'All of the following are common antimicrobial agents used in the treatment of typhoid fever except : \nSelect and explain. \nA. Ceftriaxone, B. Quinolones, C. Clindamycin, D. Azithromycin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]