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': 'The intrinsic factor of Castle is secreted by \nSelect and explain. \nA. Chief cells, B. Parietal cells, C. Enterochromaffin like cells, D. G-cells', 'role': 'user'}, {'content': "Answer: B \nExplanation: Parietal cells secrete hydrochloric acid and intrinsic factor, and chief cells produce pepsinogens and gastric lipase. Enterochromaffin-like cells secrete Histamine. G cells secrete gastrin hormone. Reference: Ganong's review of Medical Physiology, 25th ed, Page: 458", 'role': 'assistant'}]