This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Pathology
[{'content': 'Ring sideroblasts, with iron laden occurs in \nSelect and explain. \nA. Endoplasmic reticulum, B. Nucleus, C. Mitochondria, D. Nuclear membrane', 'role': 'user'}, {'content': 'Answer: C \nExplanation: i.e. (Mitochondria) : (301-Harsh Mohan 6th ) (625-Robbins & Cotran-Pathologic basis of disease 8th)Ringed sideroblasts is characteristic of sideroblastic anemia /Myelodysplastic SyndromeRinged sideroblast in which haem synthesis is disturbed as occurs in sideroblastic anaemiasRinged sideroblasts containing numerous large granules, often forming a complete or partial ring around the nucleus. These ringed arrangement of these granules is due to presence of iron laden mitochondria around the nucleus', 'role': 'assistant'}]