Which of the Following Statements Regarding Hormonal Regulation of Gastrointestinal

Multiple Choice

Which of the following statements regarding hormonal regulation of gastrointestinal function is true?

A) The presence of hydrogen ion in the small intestine stimulates secretion of secretin, which in turn stimulates bicarbonate secretion by the pancreas
B) The presence of fatty acids in the small intestine stimulates secretion of CCK, which in turn stimulates enzyme secretion by the pancreas
C) The presence of amino acids in the small intestine stimulates secretion of gastrin, which in turn stimulates HCl secretion by parietal cells
D) Both the presence of hydrogen ion in the small intestine stimulates secretion of secretin, which in turn stimulates bicarbonate secretion by the pancreas and the presence of fatty acids in the small intestine stimulates secretion of CCK, which in turn stimulates enzyme secretion by the pancreas are true
E) All of the choices are true