This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
Vitamin B is absorbed from which pa of intestine 
Select and explain. 
A. Jejunum, B. Ileum, C. Duodenum, D. Caecum
B: Ileum
Answer: B: Ileum 
Explanation: Vitamin B12 is predominantly absorbed from ileum Ref: guyton and hall textbook of medical physiology 12 edition