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': "Prothrombin time is prolonged in all of the following\nexcept: \nSelect and explain. \nA. Liver disease, B. Disseminated intravascular coagulation, C. Warfarin therapy, D. Von-Willebrand's disease", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]