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 tooth numbering system 55 indicates \nSelect and explain. \nA. Permanent right Maxillary 1st Premolar, B. Permanent left Maxillary 1st Premolar, C. Deciduous right Maxillary 1st Molar, D. Deciduous right Maxillary 2nd Molar', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]