Which of the following is FALSE regarding Kepler's laws? a) The square of the orbital period is directly proportional to the cube of the semi-major axis
b) The cube of the orbital period is directly proportional to the square of the semi-major axis.
c) The radius vector that joins the Sun with a planet sweeps equal areas in equal times.
d) The planets revolve around the Sun in an elliptical way, where the Sun is located in one of the foci.