This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Medicine
[{'content': 'For the following cardiac abnormalities, select the characteristic JVP finding.Right ventricular infarction. \nSelect and explain. \nA. Cannon a wave, B. prominent x descent, C. Kussmaul sign, D. slow y descent', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Right ventricular infarction and constrictive pericarditis frequently result in an increase in JVP during inspiration (Kussmaul sign). Severe right-sided failure can also be a cause.', 'role': 'assistant'}]