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–tubercular agent does not cause hepatotoxicity ? 
Select and explain. 
A. Isoniazid, B. Rifampicin, C. Ethambutol, D. Pyrazinamide
C: Ethambutol
Answer: C: Ethambutol 
Explanation: None