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: ENT
All of the following techniques are used to control bleeding from bone during mastoid surgery except - 
Select and explain. 
A. Cutting drill over the bleeding area, B. Diamond drill over the bleeding area, C. Bipolar cautery over the bleeding area, D. Bone wax
A: Cutting drill over the bleeding area
Answer: A: Cutting drill over the bleeding area 
Explanation: Cutting drill over the bleeding area will increase the bleeding instead of stopping it.
Diamond drill over the bleeding area will produce heat and stop the bleeding
Bipolar cautery can be used to control bleeding during mastoid surgery (Not monopolar cautery)
Bone wax is also commonly used to control bleeding during mastoid surgery (It seals the bleeding site).