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': 'The enzymes secreted by endocrinal pa of pancreas are all except: \nSelect and explain. \nA. Somatostatin, B. Chymotrypsin, C. Glucagon, D. Insulin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Chymotrypsin', 'role': 'assistant'}]