Which of the Following Statements Concerning Dietary Protein Is True

Which of the following statements concerning dietary protein is true?

A) Protein should supply the bulk of our dietary calories.
B) It is not possible for vegetarians to have a balanced diet with adequate protein intake.
C) The average American eats about half the recommended protein.
D) Dietary protein is digested to nucleic acids,which are used to make DNA.
E) Growth in children may be delayed or stunted if essential amino acids are not present in their diets.