This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antibiotics, Subject name: Pharmacology
The maximum sterilizing action 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 edition; Pg: 819