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
Which of the following statements concerning the wires used in tooth movement is most accurate? 
Select and explain. 
A. The Larger the diameter of the wire, the greater the force and the faster the movement of the tooth, B. The longer the wire, the greater the force and the faster the movement of the tooth, C. The more rectangular the shape of the wire, the greater the force and the faster the movement of the tooth, D. The Longer the wire, the more gentle the force and the faster the movement of the tooth
D: The Longer the wire, the more gentle the force and the faster the movement of the tooth
Answer: D: The Longer the wire, the more gentle the force and the faster the movement of the tooth 
Explanation: None