Which Statement Best Distinguishes Between Secretin and Gastrin

Which statement best distinguishes between secretin and gastrin?

A) gastrin responds to the entry of food into the stomach,while secretin responds to entry of food into the small intestine.
B) gastrin suppresses the release of gastric juices,while secretin suppresses the release of bile from the liver.
C) gastrin reduces gastric motility as food leaves the stomach,while secretin stimulates the secretion of pancreatic juice as food enters the small intestine.
D) gastrin stimulates gastric motility,while secretin stimulates the contraction of the gall bladder.