During Thyroid Hormone Secretion

Multiple Choice

During thyroid hormone secretion,

A) the follicular cells phagocytize a piece of colloid.
B) T4 and T3 are split off of thyroglobulin by lysosomal enzymes within the follicular cell and subsequently diffuse out of the cell into the blood.
C) T4 and T3 are secreted by exocytosis of the colloid that has been internalized by the follicular cells.
D) both (a) and (b) above.
E) both (a) and (c) above.