This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Physiology
[{'content': 'Hydrochloric acid is produced by? \nSelect and explain. \nA. G-cell, B. D-cell, C. Oxyntic cells, D. Chief cells', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C Oxyntic cellsRef: Ganong, 23rd ed. pg. 431-32Secretion in Stomach* Oxyntic cell (parietal cell) secretes: HCl and intrinsic factor of castle* Chief cell (zymogen or peptic cell) secrete: pepsinogen* G cell secrete: Gastrin* D cell secrete: Somatostatin* ECL cells secrete: Histamine', 'role': 'assistant'}]