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
Closing of midline diastema by using a removable appliance 
Select and explain. 
A. Reciprocal single simple anchorage, B. Reciprocal simple compound anchorage, C. Reciprocal stationary single anchorage, D. Reciprocal stationary compound anchorage
A: Reciprocal single simple anchorage
Answer: A: Reciprocal single simple anchorage 
Explanation: None