This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spinal Injury, Subject name: Orthopaedics
[{'content': "Motorcyclist's fracture is: \nSelect and explain. \nA. Stellate fracture across base of skull, B. Transverse fracture across base of skull, C. Lamina fracture of C7 veebra, D. Spinous process fracture of C7 veebra", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Motor Cyclists fracture (Hinged fracture): Transverse fracture across base of skull leading to separation into anterior- posterior.', 'role': 'assistant'}]