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 is least nephrotoxic - 
Select and explain. 
A. Streptomycin, B. Gentamycin, C. Polymyxin B, D. Doxycycline
D: Doxycycline
Answer: D: Doxycycline 
Explanation: Ans. is 'd' i.e., Doxycycline