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
[{'content': 'Which of the following is an antifungal? \nSelect and explain. \nA. Flucytosine, B. Cytosine arabinoside, C. 5 fluorouracil, D. Procarbazine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (Flucytosine) Ref: Tripati, 6th ed, p. 757Classification of antifungals1. AntibioticsA. Polyenes: Amphotricin B, nystatin, hamycin, natamycinB. Heterocyclic benzofuran: Griseofulvin2. Antimetabolite:Flucytosine(5-FC)3. Azoles:A. Imidazoles (topical) clotrimazole, econazole, micanazole. oxiconazole (systemic) KetoconazoleB. (systemic): Fluconazole, itraconazole, voriconazole4. Allylamineterbinafine5. Other topical agents:Tolnaftate, undecyclenic acid, benzoic acid, quindochlor, ciclopirox olamine, butenafine, sod. thiosulfate', 'role': 'assistant'}]