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
New Zealand type of school dental nurse can perform all of the following clinical duties except: 
Select and explain. 
A. Prophylaxis, B. Pulp capping, C. Root canal treatment, D. Topical fluoride application
C: Root canal treatment
Answer: C: Root canal treatment 
Explanation: None