This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Traumatic Brain Injury, Subject name: Surgery
[{'content': 'Signature fracture of skull is seen in - \nSelect and explain. \nA. Gutter fracture, B. Depressed fracture, C. Ring fracture, D. Sutural separation', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Depressed fracture", 'role': 'assistant'}]