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: Medicine
Causes of iron deficiency anemia are all except - 
Select and explain. 
A. CRF, B. Young female, C. Celiac sprue, D. Hook worm
A: CRF
Answer: A: CRF 
Explanation: <p>In chronic renal failure ,there will be decreased survival of circulating red cells which is attributed to mononuclear phagocyte system.The blood picture shows normocytic normochromic anemia.</p><p>Reference :Harsh mohan textbook of pathology sixth edition pg no 302.</p>