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
White gold alloy is: 
Select and explain. 
A. Gold with aluminum., B. Gold with silver., C. Gold with palladium., D. Gold with calcium.
C: Gold with palladium.
Answer: C: Gold with palladium. 
Explanation: None