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': 'Granulation tissue is replaced by connective tissue in? \nSelect and explain. \nA. 7 days, B. 14 days, C. 21 days, D. 1 month', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]