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: Biochemistry
Vitamin B12 is absorbed in the 
Select and explain. 
A. Stomach, B. Duodenum, C. Ileum, D. Colon
C: Ileum
Answer: C: Ileum 
Explanation: C i.e. Ileum