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: Medicine
Predisposing factor for arterial thrombosis - 
Select and explain. 
A. AT III deficiency, B. Proteins S deficiency, C. Protein C deficiency, D. Homocysteinemia
D: Homocysteinemia
Answer: D: Homocysteinemia 
Explanation: None