Regarding the limbic system, which of the following statements is TRUE?
a. Many of the "pleasure pathways" in the limbic system are found within the pons.
b. When punishment areas in the limbic system are activated, animals actually show pleasure rather than discomfort and work actively to keep the stimulation turned on.
c. Commonly abused drugs, such as nicotine and alcohol, activate the same pleasure pathways as sex and food.
d. The limbic system is made up of the pons, medulla, cerebellum, and reticular formation.