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: Forensic Medicine
Risk of thromboembolism is highest with: DNB 08 
Select and explain. 
A. Deep femoral vein thrombus, B. Anterior tibial vein thrombus, C. Posterior tibial vein thrombus, D. Popliteal vein thrombus
A: Deep femoral vein thrombus
Answer: A: Deep femoral vein thrombus 
Explanation: Ans. Deep femoral vein thrombus