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
Very common complication of skull injury is: 
Select and explain. 
A. Hematoma., B. Meningitis., C. CSF rhinorrhea., D. All of the above.
B: Meningitis.
Answer: B: Meningitis. 
Explanation: None