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
Deficiency of which of the following vitamin in most commonly seen in short bowel syndrome with ileal resection - 
Select and explain. 
A. Vitamin B12(Cyanocobalamine), B. Vitamin B1 (Thiamine), C. Folic Acid, D. Vitamin K
A: Vitamin B12(Cyanocobalamine)
Answer: A: Vitamin B12(Cyanocobalamine) 
Explanation: None