This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
What is the use of the instrument shown below in Neurosurgery? 
Select and explain. 
A. Craniotomy, B. Burr Hole, C. Suturing, D. Hydrocephalus
B: Burr Hole
Answer: B: Burr Hole 
Explanation: Ans. (b) Burr hole* Single best answer here- Burr hole