You Get Up Late and Rush to Class Without Eating

You get up late and rush to class without eating breakfast.You have the energy to make it through to lunch because

A) your liver has been converting glycogen into glucose and releasing this into your blood.
B) your liver has been converting monosaccharides and amino acids into glycogen.
C) your muscles have been releasing glycogen into your blood.
D) your muscles have been using aerobic processes to raise lactate levels in your blood.
E) your pancreas has been stimulated to secrete insulin, raising blood glucose levels.