The Aberration of Starlight Is

The aberration of starlight is:

A) a change in the wavelength of light caused by the motion of the light source
B) poor focusing of starlight caused by imperfections in the optics of a telescope
C) a change in the direction of starlight caused by its passage through the earth's atmosphere
D) an increase in the wavelength of light as it leaves the surface of a gravitating body
E) a change in the direction of starlight caused by the orbital motion of the Earth