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: Surgery
Contraindication of Enteral nutrition :a) Intestinal obstructionb) Severe Pancreatitisc) Severe diarrhoead) IBDe) Intestinal fistula 
Select and explain. 
A. abce, B. abc, C. acd, D. ace
A: abce
Answer: A: abce 
Explanation: None