This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'All of the following conditions may predispose to pulmonary embolism except \nSelect and explain. \nA. Protein S deficiency, B. Malignancy, C. Obesity, D. Progesterone therapy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Oesterogen predisposes to thrombosis and not progesterone', 'role': 'assistant'}]