Serotonin activity is abnormally ______ in patients with AN, ________ receptors are increased???, anorexic patient has difficulty sensing when he or she is _______ (_______), DA is _____, don't get that reward.

a) Increased; Dopamine; Hungry; Hunger signaling; Decreased
b) Decreased; Serotonin; Full; Satiety; Increased
c) Altered; Norepinephrine; Thirsty; Thirst signaling; Unchanged
d) Unchanged; Acetylcholine; Sleepy; Sleep signaling; Elevated