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': 'A data collected for specific purpose and used for the same purpose is \nSelect and explain. \nA. Original data, B. Primary data, C. Secondary data, D. Specific data', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]