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
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? 
Select and explain. 
A. Atransferrinemia, B. Iron defeciency anemia, C. DMT1 mutation, D. Sideroblastic anaemia
A: Atransferrinemia
Answer: A: Atransferrinemia 
Explanation: . Atransferrinemia