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
Powdered gold is: 
Select and explain. 
A. Made by a combination of chemical precipitation and atomization, B. Made by electrolytic precipitation, C. Made by beating pure gold at high temperatures, D. Made by milling pure gold ingots
A: Made by a combination of chemical precipitation and atomization
Answer: A: Made by a combination of chemical precipitation and atomization 
Explanation: Granular (Powdered) Gold
Gold powders in agglomerated form can also be prepared by chemical precipitation or atomization from molten gold. To prevent agglomerates from disintegrating, the atomized and chemically precipitated powders are first mixed with a soft wax to form pellets. 
Ref: Phillips 12 ed page no 413