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': 'Mechanism of action of fluoroquinolones is : \nSelect and explain. \nA. Inhibits cell wall synthesis, B. Inhibits protein synthesis, C. Inhibits DNA gyrase, D. Interferes with intermediary metabolism', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]