This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Microbial, Subject name: Pharmacology
Which of the following is a topical antifungal agent? 
Select and explain. 
A. Benzyl benzoate, B. Brimetenide, C. Butenafine, D. Posconazole
C: Butenafine
Answer: C: Butenafine 
Explanation: Ans. is 'c' i.e., Butenafine Butenafine:* Butenafine is a benzylamine congener of the terbinafine, which acts by inhibiting the enzyme squalene epoxidase.* Used only topically for treatment of dermatophytosis.* Efficacy in tinea cruris/corporis/pedis is similar to that of terbenafine.