Which of the Statements Below About the Circadian Clock Is

Which of the statements below about the circadian clock is NOT correct?

A) A circadian clock is a set of molecular mechanisms that cycle on their own and keep a regular rhythm.
B) Physiological or behavioral aspects of an animal are controlled by its biological clock.
C) Circadian clocks regulate daily rhythms such as feeding, sleeping, hormone production, and core body temperature.
D) Circadian clocks are dependent on a set of clock genes.
E) Circadian clocks are completely dependent on the movement of the sun.