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
Edge angle is the angle between: 
Select and explain. 
A. Rake face and radial line., B. Rake face and clearance face., C. Clearance face and tooth structure., D. Radial line and clearance face
B: Rake face and clearance face.
Answer: B: Rake face and clearance face. 
Explanation: None