This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spinal injuries, Subject name: Anatomy
'Whip-lash' Injury is caused due to- 
Select and explain. 
A. A fall from a height, B. Acute hyperextension of the spine, C. A blow on top to head, D. Acute hyperflexion of the spine
B: Acute hyperextension of the spine
Answer: B: Acute hyperextension of the spine 
Explanation: * Whiplash Injury is caused by sudden unexpected hyperextension of cervical spine followed immediately by flexion. <img alt="" src=" /> Ref: Apley's 9th/e p.820