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': 'Restoration of choice in endodontically treated primary\nsecondary molar in 9-year-old child is \nSelect and explain. \nA. Stainless steel crown, B. Cast gold crown, C. Amalgam, D. Zinc Oxide eugenol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]