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
Negative rake angle means: 
Select and explain. 
A. Rake face is ahead of radial line., B. Rake face coincides with radial line., C. Rake face is behind the radial line., D. None.
A: Rake face is ahead of radial line.
Answer: A: Rake face is ahead of radial line. 
Explanation: None