This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Trypsin is an activator of all of the following enzymes EXCEPT \nSelect and explain. \nA. Chymotrypsinogen, B. Pepsinogen, C. Proelastase, D. Procolipase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Actions of trypsin: \n\nDigestion of proteins\nCurdling of milk\nOnce formed, itself converts trypsinogen into\xa0trypsin\xa0(autocatalytic action)\nConversion of chymotrypsinogen into chymotrypsin\nPolycarboxypeptidses into carboxypeptidase.', 'role': 'assistant'}]