Ferritin and Metallothionine Are _____ Synthesized by the Body to _____

Ferritin and metallothionine are _____ synthesized by the body to _____.

A) enzymes; promote absorption of iron and selenium, respectively
B) transport proteins; facilitate the absorption of iron and chromium, respectively
C) proteins; block excess absorption of iron and zinc, respectively
D) transport proteins; deliver iron and copper, respectively, to the liver