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': 'Which characteristic often distinguishes cardiogenic shock from hypovolemic shock? \nSelect and explain. \nA. Tachycardia., B. Increased respiratory rate., C. Narrow pulse pressure., D. Oliguria.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C:\xa0Cardiogenic shock has a narrow pulse pressure while\xa0hypovolemic shock\xa0has a widened pulse pressure.\nA:\xa0Options A, B, and D are all similar characteristics of the hypovolemic and cardiogenic shock.', 'role': 'assistant'}]