<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 55-year-old woman presents with acute onset abdominal pain radiating to her back, nausea, and vomiting. CT scan suggests a diagnosis of acute pancreatitis. The pathogenesis of acute pancreatitis relates to inappropriate activation of trypsinogen to trypsin. Which of the following activates trypsin in normal digestion?? A: Amylase, B: Lipase, C: Cholecystokinin, D: Enterokinase, E: Secretin,  <response>: This is a question about the pathogenesis of acute pancreatitis and the normal activation of trypsinogen to trypsin in digestion. The key point is that inappropriate premature activation of trypsinogen to trypsin within the pancreas leads to pancreatitis. Normally, trypsinogen is activated to trypsin in the small intestine by the enzyme enterokinase, which is released by the intestinal mucosa. Enterokinase catalyzes the conversion of trypsinogen to trypsin, which then activates more trypsinogen in a cascade. The other choices listed are not involved in activating trypsinogen:- Amylase and lipase are digestive enzymes secreted by the pancreas, not involved in trypsinogen activation. - Cholecystokinin is a hormone that stimulates the release of pancreatic enzymes including trypsinogen, but does not directly activate trypsinogen. - Secretin stimulates pancreatic bicarbonate secretion, not involved in trypsinogen activation.D: Enterokinase 