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
Ringed Sideroblasts are seen in - 
Select and explain. 
A. Iron deficiency anemia, B. Myelodysplastic syndrone, C. Thalassemia, D. Anemia of chronic disease
B: Myelodysplastic syndrone
Answer: B: Myelodysplastic syndrone 
Explanation: Sideroblastic anemia can be hereditary (due to decreased ALA synthase activity) or acquired (secondary to leukemias, myelodysplastic syndrome, alcoholism, copper deficiency, pyridoxine deficiency or lead poisoning).