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': 'Healing of a wound which simply restores the continuity of the diseased marginal gingiva is known as \nSelect and explain. \nA. Regeneration, B. new attachment, C. Repair, D. reattachment', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]