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: Surgery
[{'content': 'Cardiovascular findings in an elderly Thyrotoxicosis patient are all, except - \nSelect and explain. \nA. Early diastolic murmur, B. Systolic ejection murmur, C. Scratch in left 2nd inter costal space, D. Irregularly Irregular pulse', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]