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
Simple anchorage refers to 
Select and explain. 
A. Closure by tipping, B. Closure by bodily movement, C. Closure by rotation, D. Closure by intrusion
A: Closure by tipping
Answer: A: Closure by tipping 
Explanation: None