Which of the Following Conditions Is Necessary for the Synthesis

Which of the following conditions is necessary for the synthesis of needed body protein and to prevent dietary protein from being wasted?

A) All essential amino acids need to be present in the proper amounts.
B) Dietary fat must be consumed in adequate quantities.
C) Dietary protein must be accompanied by only enough energy-yielding carbohydrate to permit the dietary protein to be used.
D) There must be at least 15 percent incomplete protein.