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
A patient presents with facial nerve palsy following head trauma with fracture of the mastoid, best intervention here is: 
Select and explain. 
A. Immediate decompression, B. Wait and watch, C. Facial sling, D. Steroids
A: Immediate decompression
Answer: A: Immediate decompression 
Explanation: Immediate onset paralysis due to fracture of mastoid (temporal bone) requires surgery (decompression, re-anastomosis or cable nerve graft).