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 common site of deep vein thrombosis is 
Select and explain. 
A. Femoral veins, B. Popliteal veins, C. Pelvic veins, D. Tibial vein
C: Pelvic veins
Answer: C: Pelvic veins 
Explanation: Pelvic veins are most commonly affected site in DVT.