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
Which of the following fluoroquinolones does not require dose adjustment in a patient with creatinine clearance of < 50 mg/min ? 
Select and explain. 
A. Ciprofloxacin, B. Trovafloxacin, C. Lomefloxacin, D. Sparfloxacin
B: Trovafloxacin
Answer: B: Trovafloxacin 
Explanation: None