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': 'The least favourable form of attempted repair of the root fracture is \nSelect and explain. \nA. Healing with calcified tissue, B. Healing with interposition of connective tissue, C. Interposition of bone and connective tissue, D. Interposition of granulation tissue', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]