This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'case history of peripheral smear is showing hypersegmented neutrophils , this is due to deficiency of \nSelect and explain. \nA. vit B12 deficiency, B. folate deficiency, C. iron deficiency, D. thalasemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Neutrophil hypersegmentation can be defined as the presence of neutrophils whose nuclei have six or more lobes or the presence of more than 3% of neutrophils with at least five nuclear lobes. ... The presence of hypersegmented neutrophils is an impoant diagnostic feature of megaloblastic anaemias. ref : robbins 10th ed', 'role': 'assistant'}]