Why Are Antithyroid Medications Provided Presurgically to a Patient with Hyperthyroidism

Why are antithyroid medications provided presurgically to a patient with hyperthyroidism? (Select all that apply.)

A) To decrease the level of hormone in the blood before surgery
B) To help reduce the risk of hemorrhage during surgery
C) To decrease the threat of a thyroid storm
D) To reduce exophthalmia
E) To increase weight