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
For a bodily movement of a small tooth the force required
is 
Select and explain. 
A. 25 - 30g, B. 40 - 75g, C. 120 - 150g, D. More than 150g
B: 40 - 75g
Answer: B: 40 - 75g 
Explanation: None