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': 'Whiplash 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: Whiplash injury results from acute hyperextension of the cervical spine in the region of C4-C6 vertebrae.\nNote: Both hyperflexion and hyperextension (i.e. flexion followed by hyperextension) are involved in the mechanism of whiplash injury. But it is hyperextension which causes damage to the spinal cord.', 'role': 'assistant'}]