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: Radiology
[{'content': 'In a patient with abdominal trauma who is hemodynamically stable, what would be the investigation of choice? \nSelect and explain. \nA. FAST, B. DPL, C. Barium meal, D. Erect x- ray abdomen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. FAST', 'role': 'assistant'}]