Gastric juice contains pepsin (protease), gastric lipase (fat-digesting), and rennin/chymosin (milk-clotting, particularly in infants). Trypsin is a pancreatic enzyme, not a gastric enzyme - it's secreted by the pancreas into the small intestine. Option A correctly lists gastric juice components. Options B, C, and D incorrectly include trypsin, which is pancreatic, not gastric.