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
In lower cervical spine injury which level is the commonest level to be involved? 
Select and explain. 
A. C3-C4, B. C4-C5, C. C5-C6, D. C6-C7
C: C5-C6
Answer: C: C5-C6 
Explanation: *Lower cervical spine injury is the most commonly involved region in the cervical spine. It is most common at C5-C6 level. These injuries may cause severe damage to the cord and consequently paraplegia. Ref: Apley's 9th/e p.816