Which of the following is an inhibitory hormone?

Inhibitory hormone is somatostatin (also known as growth hormone-inhibiting hormone, GHIH). Somatostatin is produced by the hypothalamus and also by other tissues such as the pancreas and gastrointestinal tract. Its primary function is to inhibit the secretion of growth hormone (GH) from the anterior pituitary gland. Additionally, somatostatin inhibits the release of other hormones such as insulin and glucagon from the pancreas, as well as gastric acid secretion in the stomach.