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 least vulnerable to the blast wave 
Select and explain. 
A. G .I tract, B. Lungs, C. Liver, D. Ear drum
C: Liver
Answer: C: Liver 
Explanation: None