This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death by Electrocution, Subject name: Forensic Medicine
Which among the following is the immediate cause of death in electric shock? 
Select and explain. 
A. Cervical spine injury, B. Cardiac arrhythmias, C. Rhabdomyolysis, D. Hemorrhage
B: Cardiac arrhythmias
Answer: B: Cardiac arrhythmias 
Explanation: Ans: b) Ref: Reddy 21 ed pg 291, 292Mode of injury depends upon the route taken by the electric current in the human body.Any circuit from limbs to head involve the brainstem and upper cervical cord and death occurs from paralysis of medullary respiratory centre.Any arm to arm circuit or left arm to either leg circuit involves the heart and death occurs from VF or cardiac arrest without fibrillation.