Patient with pain and swelling in left leg and thigh up to the level of inguinal ligament. Where is the level of occlusion?

The key is B. Left common iliac artery. [General rule is occlusion occurs in proximal bifarcation. So the correct key is B. Left common iliac artery. That is occlusion in the bifarcation of left common iliac artery (as femoral artery bifarcates more distally to superficial and deep branches)].