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
Brazilian test is used to determine the ultimate tensile strength of 
Select and explain. 
A. Ductile materials, B. Flexible materials, C. Brittle materials, D. Malleable materials
C: Brittle materials
Answer: C: Brittle materials 
Explanation: None