Which Are Characteristics of Crohn's Disease (CD)? (Select All That

Which are characteristics of Crohn's disease (CD) ? (Select all that apply.)

A) Fistulous tracts may occur as disease complications.
B) Half of patients will not have significant remission of symptoms.
C) Inflammation affects all layers of the intestinal tract wall.
D) The disease may be limited to the small intestine.
E) The inflammation is diffuse and continuous.