Which of the following is true of the biology of hunger with regard to the human body? A. The hormone cytokine helps start the digestion of food, travels to the brain through the bloodstream, and signals a person to stop eating. B. Galactose is an important factor in hunger, probably because the brain critically depends on it for energy. C. The lateral hypothalamus is involved in reducing hunger and restricting eating. D. Hunger is triggered by a set of sugar receptors, located in the brain, when sugar levels fall too low.