A nurse is caring for a client who has ulcerative colitis and is teaching the client about the common link with Crohn's disease. Which of the following information should the nurse include?

A. Surgery is more commonly required in ulcerative colitis for curative purposes, while Crohn’s disease may require surgery for complications but is not curative. B. Fistulas are characteristic of Crohn’s disease but are not common in ulcerative colitis. C. Ulcerative colitis and Crohn’s disease are both types of inflammatory bowel disease (IBD), involving chronic inflammation of the gastrointestinal tract. D. Ulcerative colitis begins in the rectum and spreads proximally, whereas Crohn’s disease can occur anywhere in the GI tract from mouth to anus.