This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Maximum sterilizing effect is shown with which of the following anti TB drug? 
Select and explain. 
A. Rifampicin, B. Streptomycin, C. INH, D. Pyrazinamide
D: Pyrazinamide
Answer: D: Pyrazinamide 
Explanation: Pyrazinamide acts on slow-growing bacteria inside the macrophages causing maximum sterilization., Ref: Katzung 13th /819