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
[{'content': 'All of the following conditions predispose to thrombosis except: \nSelect and explain. \nA. Paroxysmal nocturnal hemoglobinuria, B. Homocystinurea, C. Hypomagnesemia, D. Behcets syndrome', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Hypomagnesemia): All conditions other than hypmagnesemia are known predisposing causes of thrombosis.', 'role': 'assistant'}]