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: Medicine
Safest anti TB drug in renal diseas - 
Select and explain. 
A. Steptomycin, B. Capreomycin, C. Rifampicin, D. Ethambutol
C: Rifampicin
Answer: C: Rifampicin 
Explanation: None