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
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 artery was normal, common iliac and external femoral artery was normal but common femoral vein is transected. Treatment of choice is - 
Select and explain. 
A. Vein repair with continuity, B. Sclerotherapy, C. Ligation of femoral artery and vein, D. Amputation below knee
A: Vein repair with continuity
Answer: A: Vein repair with continuity 
Explanation: None