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
Apart from composites and ceramics, another material that could be copy milled easily and inexpensively is: 
Select and explain. 
A. Molybdenum, B. Germanium, C. Titanium, D. Chromium
C: Titanium
Answer: C: Titanium 
Explanation: None