This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexual offences and infanticide, Subject name: Forensic Medicine
"Dry submarine" in custodial injuries refer to 
Select and explain. 
A. Beating on soles of feet, B. Tying a plastic bag over the head, C. Immersion of head in contaminated water, D. Suspending the accused by ankles
B: Tying a plastic bag over the head
Answer: B: Tying a plastic bag over the head 
Explanation: Suffocation: Near-suffocation may occur by means of a plastic bag placed over the head of the victim ('dry submarine'). Ref - Krishan Vij textbook of forensic medicine and toxicology 5e pg - 193