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: Medicine
[{'content': 'In shock all happens except - \nSelect and explain. \nA. Constriction of capacitance vessels, B. Dilation of arterioles, C. Decrease in cardiac output, D. Heart rate decreases', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]