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 antitubercular drug is bacteriostatic ? 
Select and explain. 
A. INH, B. Pyrazinamide, C. Rifampicin, D. Ethambutol
D: Ethambutol
Answer: D: Ethambutol 
Explanation: None