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
The initial setting time for the following impression paste is: 
Select and explain. 
A. 3-6 min, B. 5-10 min, C. 10-12 min, D. 1-3 min
A: 3-6 min
Answer: A: 3-6 min 
Explanation: Initial setting time is the period from the beginning of the mixing until the material ceases to pull away or string out when its surface is touched with a metal rod of specified dimensions. The impressions should be seated in the mouth before the initial set.
The final set occurs when a needle of specified dimension fails to penetrate the surface of the specimen more than 0.2 mm under a load of 50 gm.