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
[{'content': "Which of the following is true about Wernicke's encephalopathy \nSelect and explain. \nA. Extrapyramidal symptoms, B. Auditory hallucinations, C. Vagus nerve palsy, D. Presence of horizontal nystagmus", 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer- D. Presence of horizontal nystagmusWernicke's disease is a common and preventable disorder due to deficiency of thiamine.It is commonly seen in alcoholic patients with chronic thiamine deficiency.Wernicke's encephalopathy is characterized by clinical triad ofGlobal confusionOphthalmoplegraAtariaIt includes horizontal nystatmus on lateral gaze lateral rectus palsy.Gait AtaxiaIt results from combination of polyneuropathy, cerebellar involvement and vestibular paresis.", 'role': 'assistant'}]