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: Surgery
In an encephala isole preparation, the transections is done at: 
Select and explain. 
A. First cervical spinal segment, B. Level of medulla, C. Midpontine level, D. Midcollicular level
A: First cervical spinal segment
Answer: A: First cervical spinal segment 
Explanation: Ans. a. First cervical spinal segment