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
The following are complications of ulcerative colitis except - 
Select and explain. 
A. Peptic ulceration, B. Arthritis, C. Sclerosing cholangitis, D. Toxic megacolon
A: Peptic ulceration
Answer: A: Peptic ulceration 
Explanation: None