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
Base of the skul fracture presents with invovlement of the petrous temporal bone, which of the following important sign is seen - 
Select and explain. 
A. Subconjuctival hematoma, B. CSF rhinorrhoea, C. Raccoon eyes, D. Battle sign
D: Battle sign
Answer: D: Battle sign 
Explanation: None