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 generated by 90° rotation of finger spring in pendulum appliance with distalisation: 
Select and explain. 
A. 75 gms, B. 125 gms, C. 150 gms, D. 200 gms
D: 200 gms
Answer: D: 200 gms 
Explanation: None