Which of the Following Is True of the Number of Hours

Which of the following is true of the number of hours of daylight?

A) The poles always experience equal hours of day and night.
B) Annually,the hours of daylight varies the least at higher latitudes.
C) The hours of daylight varies depending on the latitude of the observer.
D) Annually,the hours of daylight is constant at each latitude.
E) Annually,the hours of daylight varies the most along the equator.