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\tmost aesthetic\tand frequently placed\tcrown for\nprimary incisors is - \nSelect and explain. \nA. Stainless steel crown, B. Open face stainless steel crown, C. Pre-fabricated veneered steel crowns, D. Strip crowns', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]