The Exact Causes of Inflammatory Bowel Diseases Continue to Be

Multiple Choice

The exact causes of inflammatory bowel diseases continue to be explored,but it is relatively clear that

A) it is equally common among people of all ages and racial groups within the population.
B) it is likely to result from a combination of environmental and genetic factors.
C) individuals suffering from its effects are largely experiencing the consequences of the absence of immune mechanisms in the gastrointestinal tract.
D) it can be easily diagnosed since its symptoms are always very specific and the affected areas are always limited to a very focused area within the small intestine.
E) the cause is allergy to a single particular food,and patients get immediate relief by simply not eating that food.