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: Pharmacology
The organ most resistant to GA is 
Select and explain. 
A. Spinal Cord, B. Medulla oblonagata, C. Medullary cortex, D. Cerebrum
B: Medulla oblonagata
Answer: B: Medulla oblonagata 
Explanation: None