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 restorative materials requires more skills in manipulative maneuvers than others 
Select and explain. 
A. Amalgam, B. Cast gold alloy, C. Pure gold, D. Composite
C: Pure gold
Answer: C: Pure gold 
Explanation: None