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: Skin
Most potent anti-leprotic drug is: 
Select and explain. 
A. Rifampcin, B. Dapsone, C. Clofazimine, D. Norflox
A: Rifampcin
Answer: A: Rifampcin 
Explanation: A i.e. Rifampcin