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': 'Commonest hemorrhage following head injury: KCET 13 \nSelect and explain. \nA. Extradural hemorrhage, B. Subdural hemorrhage, C. Intracranial hemorrhage, D. Subarachnoid hemorrhage', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Subdural hemorrhage', 'role': 'assistant'}]