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-20 micro/dl, ferritin level-800mg/ ml, transferrin percentage saturation-64. What is a possible diagnosis? 
Select and explain. 
A. Atransferrinemia, B. Iron deficiency anemia, C. DMT 1 mutation, D. Hemochromatosis
A: Atransferrinemia
Answer: A: Atransferrinemia 
Explanation: None