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': 'Occluding both common carotid arteries proximal to carotid sinus results in \nSelect and explain. \nA. Increase in BP, increase in HR, B. Decrease in BP, decrease in HR, C. Increase in BP, decrease in HR, D. Decrease in BP, increase in HR', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]