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
Which of the following is a non operating dental auxillary: 
Select and explain. 
A. Dental nurse., B. Dental therapist, C. Dental hygienist., D. Denturist
D: Denturist
Answer: D: Denturist 
Explanation: Classification of dental auxiliaries
1) Non-operating 

Dental assistant
Receptionist
Dental laboratory technician or denturist
Dental health educator

2) Operating

Dental nurse
Dental therapist
Dental hygienist