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': 'Sideroblastic anemia is seen in chronic poisoning of- \nSelect and explain. \nA. Lead, B. Arsenic, C. Copper, D. Mercury', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Sideroblastic anemia is of 2 types. 1. Hereditary Sideroblastic anemia 2.Acquired Sideroblastic anemia. Acquired is of primary and secondary. Secondary means Sideroblastic anaemia develops secondary to a variety of drugs,chemicals, toxins, hematological and various other diseases. In this lead toxicity causes Sideroblastic anemia. Reference :Harsh Mohan textbook of pathology, 7th edition.Pg no.277,278', 'role': 'assistant'}]