In a blast injury, which of the following organ is least vulnerable to the blast wave.

In a blast injury, which of the following organ is least vulnerable to the blast wave.  

1. G.I. tract 

2. Lungs 

3. Liver 

4. Ear drum

Ans (3)    Ref Bailey & Love . Exp: In Blast injury - Eardrum Hollow Organs, Lungs are most affected. Liver is spared due to its homogenosity