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
Blunt injury abdomen, patient was hemodynamically stable, next investigation: 
Select and explain. 
A. X-ray abdomen, B. Barium swallow, C. FAST, D. DPL
C: FAST
Answer: C: FAST 
Explanation: None