This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
In a blast injury, which of the following organ is most Vulnerable is 
Select and explain. 
A. G.I tract, B. Lungs, C. Liver, D. Ear drum
D: Ear drum
Answer: D: Ear drum 
Explanation: Hollow organs which contain air are most vulnerble organs
Ear drum is most commonly injured.