Which Statement About Dietary Reference Intakes Indicates That More Teaching

Which statement about dietary reference intakes indicates that more teaching is necessary?

A) "The amount of vitamins needed in the body is based on age and physiological status."
B) "The recommended amounts of vitamins are the same for every individual."
C) "Most vitamins are measured using the metric system of micrograms and milligrams."
D) "Vitamins A, D, and E are measured in international units that are specific for each."