This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'Following is the drug of choice for salmonella typhi acute infection \nSelect and explain. \nA. Chloramphenicol, B. Ciprofloxacin, C. Cefixime, D. Amoxycillin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: At 1st chloramphenicol is DOC Later ciprofloxacin Now resistance developed to both so cephalosporins like cefixime are the DOC Ref: Textbook of Microbiology Baveja 5th ed Pg 230', 'role': 'assistant'}]