This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
[{'content': 'Which of the following antifungal is used in cancer chemotherapy? \nSelect and explain. \nA. Flucytosine, B. Amphotericin B, C. Voriconazole, D. Ketoconazole', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Flucytosine is used as a pyrimidine antagonist which is a prodrug and is conveed to 5 FU.Ref: KD Tripathi 7th ed; Pg: 791', 'role': 'assistant'}]