题目内容：
Which of the following interpretations of the biologists' theory about melatonin is INCORRECT?
A． The production of melatonin in our bodies varies at different time B． Melatonin is more likely to cause sleepiness in our bodie
C． The reduction of melatonin will cause wakefulness in our bodies,
D． The amount of melatonin remains constant in our bodie
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