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
Pt with recurrent diarrhoea, pseudopolyp, lead pipe appearance on Ba enema has - 
Select and explain. 
A. Ulcerative colitis, B. Crohn's disease, C. Irritable bowel syndrome, D. Short bowel syndrome
A: Ulcerative colitis
Answer: A: Ulcerative colitis 
Explanation: None