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 can be given safely in renal failure ? 
Select and explain. 
A. Tetracycline, B. Gentamicin, C. Amphotericin B, D. Doxycycline
D: Doxycycline
Answer: D: Doxycycline 
Explanation: None