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': "Which of the following skull fractures is called a 'Motorcyclist's fracture'? \nSelect and explain. \nA. Ring fracture of base of skull, B. Hinge fracture of base of skull, C. Comminuted fracture of skull, D. Depressed fracture of skull", 'role': 'user'}, {'content': "Answer: B \nExplanation: Hinge fracture is also known as motor cyclist's fracture. Ref: The Essentials of Forensic Medicine and Toxicology By Dr K S Narayan Reddy, 28th Edition, Page 211; Guide to Forensic Medicine and Toxicology By B. Jain, 2004, Page 98; Oxford Handbook of Forensic Medicine By Jonathan P. Wyatt, Page 145; Lawyers Guide to Forensic Medicine By Bernard Knight, 2nd Edition, Page 202", 'role': 'assistant'}]