Two factors which together cause the varying length of day and night are?

• A inclination of the earth on its axis and the rotation of the earth on its axis
• B inclination of the earth on its axis and the revolution of the earth on its elliptical orbit
• C the rotation of the eart on its axis and the revolution of the moon round the earth
• D inclination of the earth on its axis and the revolution of the moon round the earth
• E the revolution of the earth on its elliptical orbit and the inclination of the moon on its axis