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: Anatomy
[{'content': "Following are true regarding hangman's fracture - \nSelect and explain. \nA. Fracture of spinous process of C7, B. Fracture of C2 veebra, C. Listhesis of the fracture veebra, D. Knot is placed under nape of neck", 'role': 'user'}, {'content': "Answer: B \nExplanation: *Hangman fracture is fracture of C2 with listhesis of C2 over C3. Knot is under the chin. Ref: Apley's 9th/e p.813,814", 'role': 'assistant'}]