Which of the Following Is True of Intrinsic Factor

Which of the following is true of intrinsic factor?

A) Intrinsic factor is a glycoprotein that is necessary for the intestinal absorption of vitamin B₁₂.
B) Intrinsic factor is an enzyme that is necessary for the metabolism of vitamin B₁₂.
C) The lack of intrinsic factor leads to a microcytic hypochromic type of anemia.
D) None of these are correct.