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 mean setting time of MTA is 
Select and explain. 
A. 135 +/- 5 min, B. 145+/- 5 min, C. 155+/-5 min, D. 165+/-5 minutes
D: 165+/-5 minutes
Answer: D: 165+/-5 minutes 
Explanation: The maen setting time of MTA is 165+/- 5 mins . GMTA exhibits significantly higher initial and final setting times than WMTA.