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
In the following graph, width is more than the height of an orthodontic wire. Which mode does it belongs to? 
Select and explain. 
A. Edgewise mode, B. Ribbon mode, C. Anderson mode, D. None of the above
A: Edgewise mode
Answer: A: Edgewise mode 
Explanation: The thickness (height) of a rectangular wire is usually the smaller dimension, and it fills the height of the slot of the bracket. It is the dimension in the plane of the bend. 
The width of a rectangular wire is usually the larger dimension, and it fills the depth of the slot of the bracket. Hence in edgewise mode, a 0.017 X 0.025 in. rectangular wire has a thickness of 0.017 in. and width of 0.025 in. A wire can also be used in ribbon mode (flat wire), that is of greater thickness than the width.