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
Anti TB drug not toxic to liver is? 
Select and explain. 
A. Isoniazid, B. Rifampicin, C. Pyrazinamide, D. Streptomycin
D: Streptomycin
Answer: D: Streptomycin 
Explanation: Ans. is 'd' i.e., Streptomycin