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: Forensic Medicine
[{'content': 'Characteristic of anterior cranial fossa fracture: WB 07 \nSelect and explain. \nA. Black eye, B. Pupillary dilatation, C. CSF otorrhea, D. Hemotympanum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Black eye', 'role': 'assistant'}]