Upon Which Point Do Copernicus and Kepler Disagree

Multiple Choice

Upon which point do Copernicus and Kepler disagree?

A) The Moon orbits the Earth.
B) The Earth orbits the Sun.
C) Retrograde motion occurs when one planet overtakes another.
D) The orbits of the planets are ellipses, with one focus at the Sun.
E) Venus will appear as a crescent when she retrogrades between us and the Sun.