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
Treatment of choice for medullary carcinoma of thyroid to 
Select and explain. 
A. Total thyroidectomy, B. Paial thyroidectomy, C. I131 ablation, D. Hemithyroidectomy
A: Total thyroidectomy
Answer: A: Total thyroidectomy 
Explanation: 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.