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': "Whip-lash' injury is caused due to \nSelect and explain. \nA. A fall from a height, B. Acute hyperextension of the spine, C. A blow on top to head, D. Acute hyperflexion of the spine", 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Acute hyperextension of the spine', 'role': 'assistant'}]