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
[{'content': 'A person following a road-traffic accident presented in emergency with laceration of inguinal region. On examination there was swelling of inguinal region and distal pulsation was felt; internal iliac aery was normal, common iliac and external femoral aery was normal but common femoral vein is transected. Treatment of choice is - \nSelect and explain. \nA. Vein repair with continuity, B. Sclerotherapy, C. Ligation of femoral aery and vein, D. Amputation below knee', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' i.e. Vein repair with continuity", 'role': 'assistant'}]