Which of the Following Describes the Role of Protein in the Diet

Which of the following describes the role of protein in the diet of competitive athletes?

A) The need for protein per kg body weight is higher in female athletes than in male athletes
B) The need for protein is best met by increasing the level to 20-25% of the total energy content of the diet
C) The need for protein in weight lifters and marathon runners may be up to 50-100% higher than the RDA
D) The need for protein in most athletes generally could NOT be met from diets meeting energy requirements but providing only 10% of the energy as protein