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: Pathology
Predisposing factor for venous thrombosis: 
Select and explain. 
A. AT III deficiency, B. Protein S deficiency, C. Protein C deficiency, D. Dysfibrinogenemia
D: Dysfibrinogenemia
Answer: D: Dysfibrinogenemia 
Explanation: Dysfibrinogenemia produces hypercoagulable state and leads to thrombus formation in some patients. Other causes have already been discussed.