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': 'Sideroblastic anemia is caused by all except ? \nSelect and explain. \nA. Collegen vascular disease, B. Iron deficit, C. Lead poisoning, D. Cutaneous porphyria', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Iron deficit Causes of sideroblastic anemia Hereditary o X-linked recessive sideroblastic anemia. Acquired Hematological Drugs & chemicals Others Myelofibrosis INH RA Myelodysplasia Penicillamine Myxedema Acute leukemia Lead SLE Lymphoma Alcohol Iron overload Myeloma Pyridoxin dificiency Porphyria Polycythemia vera Chloromphenicol Hemolytic anemia", 'role': 'assistant'}]