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
Helix in a finger spring for mesial movement lies 
Select and explain. 
A. Mesial to the tong axis of the tooth, B. Distal to the Long axis of the tooth, C. In line to the long axis of the tooth, D. Perpendicular to the long axis of the tooth
C: In line to the long axis of the tooth
Answer: C: In line to the long axis of the tooth 
Explanation: None