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: Surgery
[{'content': 'First clinical feature of cerebello-pontine angle tumor is ? \nSelect and explain. \nA. Reduced lacrimation, B. Loss of corneal reflex, C. Hoarseness of voice, D. Exaggerated tendon reflexes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Loss of corneal reflexAbsent corneal reflex is the earliest sign of cerebellopontine (CP) angle tumors like acoustic neuroma.', 'role': 'assistant'}]