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': 'In gastric  secretion, gastrin acts on ________ receptor on parietal cells \nSelect and explain. \nA. G receptor, B. H receptor, C. CCKb receptor, D. M receptor', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Gastrin acts on cholecytokininB ( CCK B) receptor on parietal cells for gastric secretion.', 'role': 'assistant'}]