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
In this condition, force responsible for failure of abutment: 
Select and explain. 
A. Shear force, B. Compression, C. Tensile force, D. None of the above
A: Shear force
Answer: A: Shear force 
Explanation: None