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 -
Vein repair with continuity
Sclerotherapy
Ligation of femoral artery and vein
Amputation below knee