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': 'Stimulation of baroreceptors results in \nSelect and explain. \nA. Increase in heart rate, B. Decreased vagal discharge, C. Increased sympathetic discharge, D. Decrease in blood pressure', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]