________________, ____________________, and ____________________ are all examples of biogenic amines, whereas ____________________ does not derive from an amino acid at all.
a) Dopamine, serotonin, norepinephrine; acetylcholine
b) Epinephrine, histamine, melatonin; dopamine
c) Serotonin, acetylcholine, melatonin; dopamine
d) Norepinephrine, dopamine, histamine; serotonin