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: Medicine
All are complication of ileal resection, except : 
Select and explain. 
A. Megaloblastic anaemia, B. Iron deficiency anaemia, C. Gastric hypersecretion, D. Malabsorption syndrome
B: Iron deficiency anaemia
Answer: B: Iron deficiency anaemia 
Explanation: Answer is B (Iron deficiency anaemia): Iron is primarily absorbed in duodenum therefore ileal resection will not cause iron deficiency anaemia. All other options are true and explained in the previous question.