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': 'Epley manoeuvre \nSelect and explain. \nA. Positional veigo, B. Otosclerosis, C. ASOM, D. CSOM', 'role': 'user'}, {'content': 'Answer: A \nExplanation: This manoeuvre repositions the otoconial debris from the posterior semicircular canal back into utricle. (Ref: Diseases of EAR, NOSE AND THROAT by PL DHINGRA - 6th Edition)', 'role': 'assistant'}]