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: Ophthalmology
Toxic amblyopia is produced by: 
Select and explain. 
A. INH, B. Rifampicin, C. Ethambutol, D. Pyrazinamide
B: Rifampicin
Answer: B: Rifampicin 
Explanation: Ans. Rifampicin