This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Fungal Drugs, Subject name: Pharmacology
[{'content': 'A fungicidal drug that can be used orally for the treatment of onychomycosis is: \nSelect and explain. \nA. Griseofulvin, B. Amphotericin B, C. Clotrimazole, D. Terbinafine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Fungicidal drugs are amphotericin B and terbinafine. Out of these, amphotericin B cannot be given orally. Thus, the answer is terbinafine.', 'role': 'assistant'}]