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 anti TB drugs can be safely given in a patient with renal failure ? 
Select and explain. 
A. INH, B. Rifampicin, C. Streptomycin, D. Kanamycin
B: Rifampicin
Answer: B: Rifampicin 
Explanation: None