This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
[{'content': 'All of the following fluoroquinolones have been withdrawn Except \nSelect and explain. \nA. Trovafloxacin, B. Gatifloxacin, C. Gemifloxacin, D. Grepafloxacin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Except for Gemifloxacin, all others have been withdrawnTrovafloxacin due to hepatotoxicityGatifloxacin due to hypo/hyperglycemiaGrepafloxacin due to adverse cardiac events', 'role': 'assistant'}]