This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Destruction of right labyrinth causes nystagmus to \nSelect and explain. \nA. Right side, B. Left side, C. Rotatory nystagmus, D. No nystagmus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In sudden vestibular failure, the patient is found to have first degree, second degree and third-degree nystagmus to unaffected side., a so-called paralytic nystagmus (Ref: Diseases of EAR - Harold Rudman, Tony Wright - 6th Edition)', 'role': 'assistant'}]