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': 'New auxiliary types: \nSelect and explain. \nA. Dental hygienist with expanded duties, B. Frontier auxiliaries, C. Technotherapist, D. Dental licentiate, dental aide', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]