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
All are associated with Wernicke\'s encephalopathy except - 
Select and explain. 
A. Cog wheel rigidity, B. Alteration in mental function, C. VIth nerve palsy, D. Ataxia
A: Cog wheel rigidity
Answer: A: Cog wheel rigidity 
Explanation: Wernicke's encephalopathy is characterized by a triad of global confusion (alteration in mental function), Ophthalmoplegia (Bilateral 6th nerve palsy) and ataxia.