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': 'Drugs used to remove the gingival enlargement: \nSelect and explain. \nA. Eschortic drugs, B. Dichortic drugs, C. Caustic drugs, D. No such drugs are available', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]