Which Statement About the Digestive System Is True

Multiple Choice

Which statement about the digestive system is true?

A) Mammalian herbivores with microorganisms in their cecum for breaking down cellulose have more efficient absorption of some nutrients than occurs in ruminants.
B) The colon absorbs inorganic ions and water.
C) Ruminants reingest cecal feces.
D) Constipation results when the colon absorbs too little water.
E) The colon of humans has become the appendix.