This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acoustic Neuroma, Subject name: ENT
[{'content': 'The earliest symptom of acoustic nerve tumour is: \nSelect and explain. \nA. Sensorineural hearing loss, B. Facial weakness, C. Vertigo, D. Otorrhoea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (a) Sensorineural hearing loss(Ref. Scott Brown, 8th ed., Vol 2 page 1371)Mild vertigo and Facial weakness occur late.There is no ear discharge in Acoustic neuroma.', 'role': 'assistant'}]