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
Most detrimental methods of brusing causing damage to tooth soft tissues and hard tissues is: 
Select and explain. 
A. Side to side, B. Bass, C. Up and down, D. Roll
A: Side to side
Answer: A: Side to side 
Explanation: None