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': 'Which of the following drugs is associated with gingival hyperplasia? \nSelect and explain. \nA. Dihydropyridines, B. Tetracyclines, C. Cyclosporin, D. Metronidazole', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]