This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach and Intestines, Subject name: Pediatrics
In which of the following conditions the lead pipe appearance of the colon on a barium enema is seen - 
Select and explain. 
A. Amoebiasis, B. Ulcerative colitis, C. Tuberculosis of the colon, D. Crohn's involvement of the colon
B: Ulcerative colitis
Answer: B: Ulcerative colitis 
Explanation: Ans- B.