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 not a hepatotoxic drug ? 
Select and explain. 
A. Ethambutol, B. Rifampicin, C. INH, D. Pyrazinamide
A: Ethambutol
Answer: A: Ethambutol 
Explanation: Ans. is 'a' i.e., Ethambutol