Which of the following statements is NOT true about the digestive system and its contribution to homeostasis?
A. The digestive system helps to maintain the correct amounts of nutrients for the body tissues to do its job.
B. The digestive system is responsible for monitoring the oxygen and carbon dioxide amounts in the blood and tissues
C. The digestive system breaks down food sources into the needed nutrients and deposits these nutrients into the blood for use by the cells.
D. All of the above are true.