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