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
Mechanism of action of fluoroquinolones is : 
Select and explain. 
A. Inhibits cell wall synthesis, B. Inhibits protein synthesis, C. Inhibits DNA gyrase, D. Interferes with intermediary metabolism
C: Inhibits DNA gyrase
Answer: C: Inhibits DNA gyrase 
Explanation: None