​In Times of Energy Shortage Due to Inadequate Carbohydrates or Fats

​In times of energy shortage due to inadequate carbohydrates or fats in foods,the body uses protein in what way?

A) decreases the breakdown of food proteins for energy and uses stored glycogen
B) stores amino acids in the cells to be used later for energy
C) ​removes the nitrogen portion and uses the remaining fragments for energy
D) ​converts it to fat to provide more concentrated energy
E) ​strips off its acid groups so that they can be used elsewhere for energy