The correct option is D Enterogastrone
Enterogastrone is a hormone, whereas amylase, trypsin and enterokinase are enzymes. Amylase is starch splitting enzyme, while trypsin is a proteolytic enzyme. Enterokinase is a proteolytic enzyme, which acts on trypsinogen and converts it to active trypsin. Enterogastrone, is a hormone secreted by the duodenal mucosa, when fatty food is in the stomach or small intestine; it is also thought to be released, when sugars and proteins are in the intestine. Enterogastrone is transported by the bloodstream to the glands and muscles of the stomach, where it inhibits gastric movements and secretions, possibly by blocking the production or activity of gastrin, the hormone that initially causes these functions.