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': 'In mandibular deciduous tooth with poor prognosis, alveolar\nabscess and necrotic pulp, the treatment of choice: \nSelect and explain. \nA. Extraction, B. RCT, C. Apicoectomy, D. Drainage of abscess', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In mandibular deciduous tooth with poor prognosis, alveolar abscess and necrotic pulp,\xa0the treatment of choice is extraction.', 'role': 'assistant'}]