Which Type of Goiter (Enlarged Thyroid) Can Be Reduced by the Addition

Multiple Choice

Which type of goiter (enlarged thyroid) can be reduced by the addition of iodine to the diet?

A) Hyperthyroid goiter, in which thyroxine does not turn off the pituitary's secretion of thyrotropin
B) Hyperthyroid goiter, in which the thyroid is activated by high levels of thyroxine
C) Hypothyroid goiter, involving low functional thyroxine levels and high thyrotropin levels
D) Hypothyroid goiter, involving high functional thyroxine levels and low thyrotropin levels
E) All types of goiter