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: Psychiatry
Classical triad of global confusion, ataxia and ophthalmoplegia is seen in ? 
Select and explain. 
A. Alzheimer's disease, B. Delerium tremors, C. Wernicke's encephalopathy, D. Korsakoff psychosis
C: Wernicke's encephalopathy
Answer: C: Wernicke's encephalopathy 
Explanation: Ans. is 'c' i.e., Wernicke's encephalopathy