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
Solder and flux used for joining Elgiloy wires are 
Select and explain. 
A. Gold solder and borax flux, B. Gold solder and fluoride flux, C. Silver solder and borax flux, D. Silver solder and fluoride flux
D: Silver solder and fluoride flux
Answer: D: Silver solder and fluoride flux 
Explanation: None