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
Crohn's disease can be seen in ? 
Select and explain. 
A. Jejunum only, B. Colon only, C. Terminal ileum and right side, D. Mouth to anus
D: Mouth to anus
Answer: D: Mouth to anus 
Explanation: Ans. is 'd' i.e., Mouth to anus