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': 'Intrinsic factor secreted by \nSelect and explain. \nA. Chief cells, B. Parietal / oxyntic cells, C. Antral cells, D. Mucous secreting cells', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Parietal or oxyntic cells secrete HCl and intrinsic factor.Chief or zymogen or peptic cells secrete pepsinogen.(Ref: Ganong&;s Review of medical physiology, 23 rd edition, page 431)', 'role': 'assistant'}]