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: ENT
[{'content': 'A patient presents with facial nerve palsy following head trauma with fracture of the mastoid, best intervention here is: \nSelect and explain. \nA. Immediate decompression, B. Wait and watch, C. Facial sling, D. Steroids', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Immediate onset paralysis due to fracture of mastoid (temporal bone) requires surgery (decompression, re-anastomosis or cable nerve graft).', 'role': 'assistant'}]