This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Gland, Subject name: Surgery
[{'content': 'Reduction of size and vascularity prior to thyroidectomy is done by \nSelect and explain. \nA. Lugol Iodine, B. Propylthiouracil, C. Radioiodine, D. Propranolol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Lugol iodineRef: Bailey and Love 26th edition Page 760* Lugol's Iodine: 10% Potassium Iodine+ 5% Iodide is used on last 10 days before surgery to make the gland firm and stronger and decreases the vascularity of gland", 'role': 'assistant'}]