This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Drowning, Subject name: Forensic Medicine
Hydrocution is ? 
Select and explain. 
A. Electric shock in water, B. Cold water submersion, C. Submersion in boiling water, D. None
B: Cold water submersion
Answer: B: Cold water submersion 
Explanation: Hydrocution : (immersion syndrome ) Type of atypical drowning Mechanism -sudden dyspnoea and vagal inhibition -->hea stops immediately.( ventricular fibrillation has also been repoed.)