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: Medicine
Acute changes in brain due to wernicke's encephalopathy in chronic alcoholics is most frequently seen in: 
Select and explain. 
A. Mamillary bodies, B. Aqueduct of the midbrain, C. Around the third ventricle, D. Around the fouh ventricle
A: Mamillary bodies
Answer: A: Mamillary bodies 
Explanation: Acute changes are most frequently seen in the 1. Mamillary bodies And also seen in 2. Around the third and fouh ventricles and 3. Aqueduct of the midbrain. Ref: Thorarinsson BL, S C I E N T I F I C P A P E R O V E R V I E W