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
Which of the following condition is associated with pseudopolyp formation? 
Select and explain. 
A. Crohn's disease, B. Ulcerative colitis, C. Celiac disease, D. Whipple's disease
B: Ulcerative colitis
Answer: B: Ulcerative colitis 
Explanation: Pseudopolyps are associated with Ulcerative colitis. Other features of ulcerative colitis includes presence of erythematous, fine granular mucosal surface, in severe cases mucosa appear hemorrhagic, edematous and ulcerated. Toxic colitis or megacolon is an impoant complication. Reference: Harrison's Internal Medicine, 18th Edition, Chapter 295, Pages 2487-2489.