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
A Patient with TB under treatment complains of tinnitus and decreased hearing. Which drug is a causative factor: 
Select and explain. 
A. lsoniazid, B. Streptomycin, C. Ethambutol, D. Pyrazinamide
B: Streptomycin
Answer: B: Streptomycin 
Explanation: Streptomycin