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': 'Earliest symptom of glomus tumour is \nSelect and explain. \nA. Pulsatile tinnitus, B. Deafness, C. Headache, D. Veigo', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The earliest symptoms are hearing loss and tinnitus. The earliest symptom of a glomus tumour is pulsatile tinnitus which is of swishing character and synchronous with pulse. Ref: Dhingra 7th edition pg. 121', 'role': 'assistant'}]