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
[{'content': 'A 20 year old male come to causality with head injury. Examination reveals normal consciousness and blood in the tympanic membrane. Most likely cause is- \nSelect and explain. \nA. Extradural hemorrhage, B. Subdural hemorrhage, C. Intraventricular hemorrhage, D. Basilar fracture', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]