The Eccentricity of a Planet's Orbit Describes

The eccentricity of a planet's orbit describes

A) the tilt of the planet's spin axis with respect to its orbital plane.
B) its shape compared to that of a circle.
C) its motion at any specific point in its orbit as seen from Earth, that is, whether direct, retrograde, or stationary.
D) its tilt with respect to the plane of Earth's orbit (the ecliptic plane) .