Which of the Following Is Not a Feature of Folate

Which of the following is not a feature of folate nutrition?

A) Most food folate is bound to a string of amino acids
B) Folate is actively secreted back into the GI tract with bile
C) Food folate must be hydrolyzed by intestinal cell enzymes prior to absorption
D) Folate must be methylated by homocysteine prior to crossing the brush border membrane