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
[{'content': 'Thromboembolism after pelvic surgery is usuallyfrom the veins - \nSelect and explain. \nA. iliac, B. Calf, C. Femoral, D. Pelvic', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Femoral Calf veins are the most common site of deep venous thrombosis in post operative period, but risk of embolism from calf venous thrombosis is extremely low. DVT of the femoropopliteal veins are the most common site of pulmonary thromboembolism.", 'role': 'assistant'}]