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
For dental amalgam, the elastic modulus and tensile strength is 
Select and explain. 
A. 40 Gpa and 60 — 100 MPa, B. 21 Gpa and 27 — 55 MPa, C. 350 Gpa and 10 — 120 MPa, D. 360 Gpa and 125 — 130 MPa
B: 21 Gpa and 27 — 55 MPa
Answer: B: 21 Gpa and 27 — 55 MPa 
Explanation: None