Generally Speaking,how Does Positive Affect Fluctuate During the Day for Most

Generally speaking,how does positive affect fluctuate during the day for most people?

A) It starts on Friday at 5 PM and ends on Sunday at midnight.
B) It begins late at night,and stays that way until early morning.
C) It tends to peak in the late morning and lasts until early evening.
D) It peaks at sunrise,and begins to drop at sunset.