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: Dental
[{'content': 'Herpes resistant to acyclovir is treated by – \nSelect and explain. \nA. Foscarnet, B. Lamivudine, C. Ganciclovir, D. Valacyclovir', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Foscarnet is approved for Acyclovir resistant mucocutaneous HSV infection.', 'role': 'assistant'}]