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
In dental materials setting time is measured by which test 
Select and explain. 
A. Rockwell test, B. Cold blend test, C. Vickers test, D. Vicat needle method
D: Vicat needle method
Answer: D: Vicat needle method 
Explanation: None