This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vascular surgery, Subject name: Surgery
[{'content': 'Most common cause of acquired AV fistula is \nSelect and explain. \nA. Bacterial infection, B. Fungal infection, C. Blunt trauma, D. Penetrating trauma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: . Ans : (d) Penetrating Trauma Penetrating injuries are the most common cause , but fistulas are sometimes seen after blunt trauma . Fungal and bacterial infections are not much common as penetrating trauma in acquired AV fistula.', 'role': 'assistant'}]