The shape and alignment of the orbit of Neptune is:
A) almost circular (eccentricity = 0.009) , larger than the orbit of Uranus, and close to the ecliptic plane.
B) almost circular (eccentricity = 0.009) , smaller than the orbit of Uranus, and close to the ecliptic plane.
C) almost circular (eccentricity = 0.009) , but steeply inclined to the ecliptic plane (17°) .
D) very elliptical, such that its orbit occasionally carries it beyond Pluto's circular orbit, but in the ecliptic plane.
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