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
[{'content': 'Necrotising ragged ulceration with no apparent inflammatory response is indicative of: \nSelect and explain. \nA. Leucocytosis, B. Polycythemia vera, C. Sickle cell anemia, D. Agranulocytosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]