This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mycobacterial Diseases (TB, Leprosy and MAC), Subject name: Pharmacology
In leprosy, the best bactericidal agent is: 
Select and explain. 
A. Clofazimine, B. Dapsone, C. Rifampicin, D. Ethionamide
C: Rifampicin
Answer: C: Rifampicin 
Explanation: Best bactericidal agent in leprosy: Rifampicin, given once monthly in leprosy and once daily in TB. Bacteriostatic agent in leprosy: clofazimine and dapsone.