A 38-Year-Old Man Who Has Galactorrhea Is Found to Have

A 38-year-old man who has galactorrhea is found to have a prolactinoma. His physician treats him with bromocriptine, which eliminates the galactorrhea. The basis for the therapeutic action of bromocriptine is that it

A) antagonizes the action of prolactin on the breast
B) enhances the action of prolactin on the breast
C) inhibits prolactin release from the anterior pituitary
D) inhibits prolactin release from the hypothalamus
E) enhances the action of dopamine on the anterior pituitary