This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Surgery
[{'content': 'Treatment of choice for medullary carcinoma of thyroid to \nSelect and explain. \nA. Total thyroidectomy, B. Paial thyroidectomy, C. I131 ablation, D. Hemithyroidectomy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Treatment is by total thyroidectomy and either prophylactic or therapeutic resection of the central and bilateral cervical lymph nodes. Bailey & Love's sho practise of surgery,25th edition,page no:798;SRB's manual of surgery,5th edition,page no:487.", 'role': 'assistant'}]