This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
Most common organ injured in submerged head underwater explosion: 
Select and explain. 
A. Tympanic membrane, B. GIT, C. Lungs, D. Hea
A: Tympanic membrane
Answer: A: Tympanic membrane 
Explanation: Air blast Most commonly injured organ - tympanic membrane Most severely injured organ - lungs Under water blast Most commonly injured organ If head is out of water - small intestine If head is submerged - tympanic membrane Most severely injured organ - small intestine