This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Cabot&;s ring is seen in- \nSelect and explain. \nA. Megaloblastic anemia, B. Sickle cell disease, C. Iron deficiency anemia, D. Autoimmune anemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In the peripheral blood smear of megaloblastic anaemia . Cabot rings are thin, threadlike, red to violet rings or "figure 8" shaped inclusions in red blood cells. Cabot rings are remnants of the mitotic spindle, and can be seen in megaloblastic anemia, medication effect, myelodysplasia and other forms of dyserythropoiesis. reference :textbook of Pathology, 7th edition ,Author Harsha Mohan ,page number 283, figure 10.20', 'role': 'assistant'}]