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: Unknown
Pathophysiology cause of the disease shown in Xray and gross specimen of a person who died in a ICU is  ? 
Select and explain. 
A. Diffuse alveolar damage, B. Usual interstitial pneumonia, C. Acute interstitial pneumonia, D. Organizing pneumonia
A: Diffuse alveolar damage
Answer: A: Diffuse alveolar damage 
Explanation: Shock is recognized as a major cause of acute lung injury and subsequent acute respiratory syndrome (ARDS).
These disorders are characterized by non-cardiogenic pulmonary edema secondary to diffuse pulmonary capillary endothelial and alveolar epithelial injury, hypoxemia, and B/L diffuse pulmonary infiltrates.
Shock lung (ARDS) is vascular collapse caused by bacterial sepsis or trauma