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: AIIMS 06; Karnataka 07; BHU 12; NEET 15 \nSelect and explain. \nA. Fall from a height, B. Acute hyperextension of the spine, C. Blow on top to head, D. Acute hyperflexion of the spine", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Acute hyperextension of the spine', 'role': 'assistant'}]