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
Most commonly varicose veins are seen with - 
Select and explain. 
A. Long saphenous vein, B. Short saphenous vein, C. Both, D. popliteal and femoral vein
A: Long saphenous vein
Answer: A: Long saphenous vein 
Explanation: " The usual distribution of varicose veins is below the knee in branches of the greater saphenous system."