Concerning Ulcerative Colitis (UC) and Crohn's Disease (CD), Which of the Following

Concerning ulcerative colitis (UC) and Crohn's disease (CD) , which of the following statements is TRUE?
I. Ulcerative colitis (UC) is a risk factor for colon cancer.
II. Crohn's disease (CD) can appear anywhere from the mouth to the rectum.
III. UC has a continuous pattern of GI inflammation.
IV. CD has a segmented pattern of GI inflammation.

A) I and II only
B) II and IV only
C) III and IV only
D) All are true