Melatonin is produced by which of the following pathways.
Substances:
1.Serotonin
2.Melatonin
3.L-Tryptophan
4.N-Acetyl Serotonin
5.5-HTP
Enzymes:
A.tryptophan 5-hydroxylase
B.acetylserotonin O-methyltransferase
C.AANAT
D.5-HTP decarboxylase
Select one of the following: