In Times of Energy Shortage Due to Inadequate Carbohydrate or Fat

In times of energy shortage due to inadequate carbohydrate or fat in foods, how does the body generate energy?

A) The body decreases its breakdown of food proteins and utilizes the stored glycogen.
B) The amine group in the amino acid is converted into carbohydrates to obtain energy.
C) The amine group from the amino acids is removed and the remaining fragments are used for energy.
D) Cells convert amino acids into fat and obtain concentrated energy.
E) Cells strip off the acid groups from amino acids and convert them into energy.