This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiomyopathies, Subject name: Medicine
[{'content': 'What is the cause of dicrotic notch? \nSelect and explain. \nA. Passive filling of blood in ventricles, B. Rapid ejection phase, C. Peripheral resistance, D. Isovolumic contraction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dicrotic notch is seen in pulse tracing after closing of aoic valve. The peripheral resistance generates an abberation in tracing while the aoic valves are closing-->causing Dicrotic pulse.', 'role': 'assistant'}]