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
In a 40 years old male thrombus in the common femoral artery is because of - 
Select and explain. 
A. Atheroma, B. Thrombangits obliterans, C. Raynauds disease, D. Abdominal mass
A: Atheroma
Answer: A: Atheroma 
Explanation: None