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': 'Appearance of characteristic “burr cells”,  “helmet cells” and “triangle cells” in peripheral blood smears is indicative of: \nSelect and explain. \nA. Polychromasia, B. Anisocytosis, C. Poikilocytosis, D. Schistocytosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mechanical fragmentation of red cells (schistocytosis) leads to the appearance of characteristic “burr cells”, “helmet cells” and “triangle cells” in peripheral blood smears.', 'role': 'assistant'}]