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': 'Purpura fulminans is seen in which of the following conditions? \nSelect and explain. \nA. Severe DIC, B. Leukocytoclastic vasculitis, C. Viral hemorrhagic fever, D. Tularemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Large ecchymoses with sharply irregular shapes evolving into hemorrhagic bullae and then into black necrotic lesions seen in DIC sepsis, neisseria, malignancy, massive trauma.', 'role': 'assistant'}]