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 the strongest phase in amalgam reaction? 
Select and explain. 
A. Gamma phase, B. Gamma-1 phase, C. Gamma-2 phase, D. Mercury phase
A: Gamma phase
Answer: A: Gamma phase 
Explanation: The gamma phase is the strongest phase and for this reason it should occupy the maximum available space in the volume of the restoration.
Reference: Marzouk Operative dentistry, pg-106