A 12-year-old boy had recent onset of excessive sweating, palpitations and an increased appetite. On physical examination, he was found to have exophthalmos, hyperkinetic movements and a 3palpable nodule of the thyroid gland. The ideal way to treat this patient is -

• A. Propylthiouracil 100-200 mg daily
• B. Total thyroidectomy
• C. Radioactive iodine
• D. Subtotal thyroidectomy