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': 'A patient with microcytic hypochromic anemia, Hb- 9%,serum iron is 20 ?/dl, ferritin level 800 ng/ml, transferrin percentage saturation is 64. What is possible diagnosis? \nSelect and explain. \nA. Atransferrinemia, B. Iron defeciency anemia, C. DMT1 mutation, D. Sideroblastic anaemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: . Atransferrinemia', 'role': 'assistant'}]