The Hormones Released by Cells in the Small Intestine in Response

The hormones released by cells in the small intestine in response to the arrival of amino acids and smaller peptides are secretin and cholecystokinin. Together, these hormones stimulate

A) the production of hydrochloric acid and pepsinogen in the stomach.
B) the release of active enzymes from the pancreas.
C) the release of bicarbonate and proenzymes from the pancreas.
D) the release of di- and tripeptides from the absorptive cells that line the small intestine.