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': 'Macropolycyte in peripheral smear is a feature \nSelect and explain. \nA. Hereditary sherocytosis, B. Iron deficiency anaemia, C. Sickle cell anaemia, D. Megaloblastic anaemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]