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': 'Dentist participating in the delta dental planers paid 90th percentile whereas non-participating dentists are paid \nSelect and explain. \nA. 15th percentile, B. 30th percentile, C. 100th percentile, D. 50th percentile', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]