Which of the following is true of vitamin D and folic acid for a human?
A) They cannot be synthesized enough to meet a person's demand
B) They cannot be synthesized at all by the human body
C) They must be consumed in the diet
D) They are both used to regulate calcium uptake by the bone
E) Enough can be synthesized by the body to meet a person's demand
Correct Answer:
Verified
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