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 most important function of hydrochloric acid in the stomach is: \nSelect and explain. \nA. Destruction of bacteria, B. Neutralization of chyme, C. Activation of pepsinogen, D. Stimulation of pancreatic secretion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Functions of HCl are: \n\nactivation of pepsinogen to pepsin by providing acidic medium,\nbacteriolytic action and\nacidification of chyme which cause release of secretin and cholecystokinin hormones.', 'role': 'assistant'}]