Correct option: AExplanation:'Crypts of Lieberkühn' secrete antibacterial lysozyme called Paneth cells.The pancreas have Zymogen cells partly to prevent the enzymes from digesting proteins in the cells in which they are synthesized.Kupffer cells are phagocytic cell which forms the lining of the sinusoids of the liver and is involved in the breakdown of red blood cells..Argentaffin cells are the round shaped epithelial found in the lining of the digestive tract such as gastric glands in the stomach wall.Option A is correct.