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: Medicine
Acute severe lung injury is characterised by- 
Select and explain. 
A. Hypotension, B. Shunting, C. Cardiac tamponade, D. Cardiac irregularities
B: Shunting
Answer: B: Shunting 
Explanation: None