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 of the following is not an antifungal drug ? 
Select and explain. 
A. Ketoconazole, B. Undecylenic acid, C. Ciclopirox, D. Clofazimine
D: Clofazimine
Answer: D: Clofazimine 
Explanation: None