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': 'Dancing carotid is seen in : \nSelect and explain. \nA. Thyrotoxicosis, B. Hypothyroidism, C. AV Fistula, D. Blow out carotid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Thyrotoxicosis) Dancing carotids may be seen in Aoic regurgitation Thyrotoxicosis', 'role': 'assistant'}]