Which one of the following is not true about Kepler's rules for planetary bodies?
A. The orbit of a planet is an elliptical with the Sun at one of the two foci
B. A line segment connecting a planet and the sun makes an equal area outside during equal intervals of time
C. The square of its orbital period is proportional to the cube of the semi-principal axis of its orbit
D. The orbital period depends on the mass of the planet
Answer: Option D
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