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
Force required for headgear to restrain maxillary growth is: 
Select and explain. 
A. 50-100 gm per side, B. 150-200 gm per side, C. 250-500 gm per side, D. 750-1000gm per side
C: 250-500 gm per side
Answer: C: 250-500 gm per side 
Explanation: None