Which of the following doesn't have any effect on pancreatic secretion?

Answer- D. Gastric inhibitory polypeptideCCK- As chyme floods into the small intestine, cholecystokinin is released into blood and binds to receptors on pancreatic acinar cells, ordering them to secrete large quantities of digestive enzymes.Secretin-The predominant effect of secretin on the pancreas is to stimulate duct cells to secrete water and bicarbonate.Gastrin- Stimulate acid secretion by the parietal cell, gastrin stimulates pancreatic acinar cells to secrete digestive enzymes.