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': '3 year old child has a central incisor that has turned\nbluish black. There is a small radiolucent area at the\napex of the tooth. Ideal treatment is \nSelect and explain. \nA. Extraction, B. Pulpotomy with formocresol, C. Pulpectomy; fill with zinc oxide eugenol, D. Pulpotomy with calcium hydroxide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]