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': 'Which of the following fluoroquinolones does not require dose adjustment in a patient with creatinine clearance of < 50 mg/min ? \nSelect and explain. \nA. Ciprofloxacin, B. Trovafloxacin, C. Lomefloxacin, D. Sparfloxacin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]